Contra (series) (English Wikipedia)

"CONTRA > CONVERSIONS > DOS". Contra Encyclopedia. June 30, 2014. Retrieved April 30, 2016.
"CONTRA > CONVERSIONS > CPC". Contra Encyclopedia. June 30, 2014. Retrieved April 30, 2016.
"CONTRA > CONVERSIONS > SPECTRUM". Contra Encyclopedia. June 30, 2014. Retrieved April 30, 2016.

disgruntleddesigner.com (Global: low place; English: low place)

"Arc Hound preview". Famicom Tsūshin (in Japanese). June 28, 1991. Archived from the original on December 11, 2017. Retrieved April 11, 2022.

fixya.com (Global: low place; English: low place)

static.fixya.com

KONAMI ANNOUNCES CONTRA 4 FOR NINTENDO DS™ (PDF), June 20, 2007, archived from the original (PDF) on April 10, 2022, retrieved April 10, 2022

florre.se (Global: low place; English: low place)

"Super C Manual" (PDF). florre.se. Retrieved October 26, 2014.

gamesdbase.com (Global: low place; English: low place)

"How To Play Contra (NES Manual)" (PDF). Games Database. Retrieved October 26, 2014.

gamespy.com (Global: 1,256^th place; English: 817^th place)

contra.classicgaming.gamespy.com

Nintendo Player's Guide: Super NES. 1992. p. 152. Archived from the original on June 13, 2007. Retrieved August 13, 2007.

gematsu.com (Global: 779^th place; English: 489^th place)

Romano, Sal (April 10, 2024). "Vampire Survivors coming to PS5 and PS4 this summer, DLC 'Operation Guns feat. Contra' announced". Gematsu. Retrieved May 12, 2024.
Romano, Sal (June 11, 2019). "Contra: Rogue Corps announced for PS4, Xbox One, Switch, and PC". Gematsu. Retrieved June 12, 2019.

ign.com (Global: 53^rd place; English: 44^th place)

ign.com

Stevens, Colin (May 28, 2019). "Konami Announces Contra Anniversary Collection Lineup". IGN.
"Contra 3DS". IGN. Archived from the original on July 22, 2024. Retrieved November 21, 2024.

au.wii.ign.com

Hatfield, Daemon (May 12, 2009). "Contra ReBirth Impressions". IGN. Retrieved May 13, 2009.

ign64.ign.com

IGN staff (January 29, 1999). "Contra Canned". IGN.com. Retrieved December 24, 2008.

ps3.ign.com

Daemon Hatfield (June 3, 2010). "E3 2010: (Contra) Hard Corps Preview - PlayStation 3 Preview at IGN". Ps3.ign.com. Retrieved December 31, 2010.

klustr.net (Global: low place; English: low place)

"China's getting a Contra remake - Contra Database". www.klustr.net. Archived from the original on February 18, 2014. Retrieved April 30, 2016.
"The recurring bosses of Contra - Part 6". Contra Database. Retrieved October 26, 2014.
"The recurring bosses of Contra - Part 7". Contra Database. Retrieved October 26, 2014.

konamigaming.com (Global: low place; English: low place)

mobygames.com (Global: 1,409^th place; English: 1,191^st place)

"Contra (1988) Commodore 64 box cover art - MobyGames". MobyGames. Retrieved April 30, 2016.

nintendo.co.jp (Global: 950^th place; English: 1,152^nd place)

"Contra III The Alien Wars/Super Probotector: Alien Rebels" (PDF). Nintendo. Retrieved April 1, 2022.

nintendoworldreport.com (Global: 3,218^th place; English: 1,874^th place)

James Charlton (May 9, 2009). "Konami Announces Contra Rebirth for WiiWare". Nintendo World Report. Retrieved May 11, 2009.

pocketgamer.co.uk (Global: 8,154^th place; English: 5,144^th place)

"Contra: Evolution Revolution blasts onto the Chinese App Store". Pocket Gamer. January 22, 2013. Retrieved April 30, 2016.

spong.com (Global: low place; English: low place)

"Contra announced for GameCube".

thegameisafootarcade.com (Global: low place; English: low place)

Operation C - Nintendo Game Boy - Manual - gamesdatabase.org (PDF), archived from the original (PDF) on April 10, 2022, retrieved April 10, 2022

unseen64.net (Global: low place; English: 9,505^th place)

monokoma (January 18, 2019). "Contra Online [PS2, Xbox, PC - Cancelled] - Unseen64". Unseen64: Beta, Cancelled & Unseen Videogames!. Archived from the original on September 22, 2024. Retrieved November 21, 2024.

vgmdb.net (Global: 7,509^th place; English: 5,626^th place)

Ａ－ＪＡＸ～コナミ・ゲーム・ミュージック VOL.4 A-Jax: Konami Game Music Vol. 4 (Booklet). G.M.O. Records / Alfa Records. 28XA-201.

web.archive.org (Global: 1^st place; English: 1^st place)

"China's getting a Contra remake - Contra Database". www.klustr.net. Archived from the original on February 18, 2014. Retrieved April 30, 2016.
monokoma (January 18, 2019). "Contra Online [PS2, Xbox, PC - Cancelled] - Unseen64". Unseen64: Beta, Cancelled & Unseen Videogames!. Archived from the original on September 22, 2024. Retrieved November 21, 2024.
"Contra 3DS". IGN. Archived from the original on July 22, 2024. Retrieved November 21, 2024.
Operation C - Nintendo Game Boy - Manual - gamesdatabase.org (PDF), archived from the original (PDF) on April 10, 2022, retrieved April 10, 2022
KONAMI ANNOUNCES CONTRA 4 FOR NINTENDO DS™ (PDF), June 20, 2007, archived from the original (PDF) on April 10, 2022, retrieved April 10, 2022
Konami. Crisis Force (Family Computer) (in Japanese). Level/area: Pamphlet included with the game.
"Arc Hound preview". Famicom Tsūshin (in Japanese). June 28, 1991. Archived from the original on December 11, 2017. Retrieved April 11, 2022.
Nintendo Player's Guide: Super NES. 1992. p. 152. Archived from the original on June 13, 2007. Retrieved August 13, 2007.

Contra (series) (English Wikipedia)

arcade-history.com (Global: low place; English: low place)

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gamesdbase.com (Global: low place; English: low place)

gamespy.com (Global: 1,256th place; English: 817th place)

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gematsu.com (Global: 779th place; English: 489th place)

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ign.com

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mobygames.com (Global: 1,409th place; English: 1,191st place)

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nintendoworldreport.com (Global: 3,218th place; English: 1,874th place)

pocketgamer.co.uk (Global: 8,154th place; English: 5,144th place)

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gamespy.com (Global: 1,256^th place; English: 817^th place)

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mobygames.com (Global: 1,409^th place; English: 1,191^st place)

nintendo.co.jp (Global: 950^th place; English: 1,152^nd place)

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pocketgamer.co.uk (Global: 8,154^th place; English: 5,144^th place)

unseen64.net (Global: low place; English: 9,505^th place)

vgmdb.net (Global: 7,509^th place; English: 5,626^th place)

web.archive.org (Global: 1^st place; English: 1^st place)