Reference Comics:

ALIENS:

• ALIENS: Apocalypse - The Destroying Angels
  by Mark Schultz, Doug Wheatley
  Dark Horse Comics; ASIN: 1569713995

• ALIENS: Book One
  by Mark Verheiden, Chris Warner
  Dark Horse Comics; ASIN: 1878574027

• ALIENS: Book Two
  by Mark Verheiden, Denis Beauvais
  Dark Horse Comics; ASIN: 1878574035

• ALIENS: Book 3 : Earth War
  by Mark Verheiden, Sam Keith
  Dark Horse Comics; ASIN: 187857423X

• ALIENS: Earth Hive (Aliens Series, No 1)
  by Mark Verheiden, Mark A. Nelson
  Dark Horse Comics; ASIN: 1878574086

• ALIENS: Female War (Aliens Series , No 3)
  by Mark Verheiden, Sam Kieth
  Dark Horse Comics; ISBN: 1569711909

• ALIENS: Genocide (Aliens Series , No 4)
  by Mike Richardson, John Arcudi, Damon Willis, Karl Story
  Dark Horse Comics; ISBN: 1569711968

• ALIENS: Hive (Aliens Series , No 5)
  by Jerry Prosser, Kelley Jones, Kelly Jones
  Dark Horse Comics; ASIN: 1569711224

• ALIENS: Harvest
  by Jerry Prosser
  Dark Horse Comics; ISBN: 1569711984

• ALIENS: Kidnapped
  by Jim Woodring, Justin Green, Francisco Solano Lopez
  Dark Horse Comics; ISBN: 1569713723

• ALIENS: Labyrinth
  by Jim Woodring, Kilian Plunkett, Killian Plunkett
  Dark Horse Comics; ISBN: 156971245X

• ALIENS: Nightmare Asylum
  by Mark Verheiden, Den Beauvais, Den Beauvais
  Dark Horse Comics; ISBN: 1569712174

• ALIENS: Outbreak
  by Mark Verheiden, Willie Schubert, Mark Nelson
  Dark Horse Comics; ISBN: 1569711747

• ALIENS: Rogue
  by Ian Edginton, Will Simpson, John Costanza
  Dark Horse Comics; ISBN: 1569712670

• ALIENS: Salvation and Sacrifice
  by Dave Gibbons, Peter Mulligan, Mike Mignola, Paul Johnson
  Dark Horse Comics; ISBN: 1569715610

• ALIENS: Stronghold
  by John Arcudi, Doug Mahnke, Perry McNamee
  Dark Horse Comics; ISBN: 156971262X

• ALIENS: Tribes
  by Stephen R. Bissette, Dave Dorman, Steve Bissette
  Dark Horse Comics; ISBN: 1878574280

• Cyberantics
  by: Jerry Prosser, Rick Geary
  Dark Horse Comics; ISBN: 1878574299

• The Complete ALIENS Hardcover
  contains: ALIENS Book 1, ALIENS Book 2, ALIENS: Earth War, Dark Horse Presents: ALIENS
  Dark Horse Comics; ISBN: 187574841

ALIENS Crossovers:

• Batman/ALIENS
  by Ron Marz, Bernie Wrightson
  Dark Horse Comics; ASIN: 1569713057

• Green Lantern/ALIENS
  by Ron Marz
  Dark Horse Comics; ISBN: 1569715386

• Superman/ALIENS
  by Dan Jurgens, Kevin Nowlan
  Dark Horse Comics; ISBN: 1569711674

ALIENS vs. Predator:

• ALIENS vs. Predator Collection
  by Randy Stradley, Chris Warner, Phill Norwood
  Dark Horse Comics; ISBN: 1569711259

• ALIENS vs. Predator: Deadliest of the Species
  by Chris Claremont, Eduardo Barreto, Jackson Guice, John Beatty
  Dark Horse Comics; ISBN: 1569711844

• ALIENS vs. Predator: Eternal
  by Ian Edginton, Alex Maleev, Alexander Maleev
  Dark Horse Comics; ISBN: 1569714096

• ALIENS vs. Predator: War
  by Randy Stradley, Mike Manley, Ricardo Villagran
  Dark Horse Comics; ISBN: 1569711585

ALIENS vs. Predator Crossovers:

• ALIENS vs. Predator vs. the Terminator
  by Mark Schultz
  Dark Horse Comics; ISBN: 1569715688

• ALIENS/Witchblade/Darkness/Predator: Mindhunt
  by David Quinn
  Dark Horse Comics; ISBN: 1569716153

Predator:

• Predator: Cold War
  by Mark Verheiden, Ron Randall, Steve Mitchell
  Dark Horse Comics; ISBN: 1878574795

• Predator: Race War
  by Andrew H. Vachss, Randy Stradley
  Dark Horse Comics; ISBN: 1569711127

Predator Crossovers:

• Batman Versus Predator II: Bloodmatch
  by Doug Moench, Terry Austin, Paul Gulacy
  DC Comics; ISBN: 1563892219

• Batman Versus Predator III: Blood Ties
  by Chuck Dixon, Dixon Chuck, Rodolfo Damaggio, John Costanza
  DC Comics; ISBN: 1563894181

• Batman Versus Predator: The Collected Edition
  by Dave Gibbons, Bob Kahan, Diana Schutz
  DC Comics; ISBN: 1563890925

• Edgar Rice Burroughs' Tarzan Vs. Predator: At the Earth's Core
  by Walter Simonson, Lee Weeks, Edgar Rice Burroughs
  Dark Horse Comics; ISBN: 156971231X