อ้างอิง ของ คอนทรา (วิดีโอเกม)

  1. ↑ "Scans of the Japanese brochure for Contra". The Arcade Flyer Archive.
  2. ↑ Konami. Contra. Family Computer. Level/area: Instruction manual (Japanese)
  3. ↑ "Instruction Manual of Contra for the NES (transcript from tsr's NES archives)".
  4. ↑ "Nintendo Power - The 20th Anniversary Issue!" (Magazine)|format= requires |url= (help). Nintendo Power. 231 (231). San Francisco, California: Future US. August 2008: 71. Unknown parameter |month= ignored (help); |access-date= requires |url= (help)CS1 maint: Date and year (link)
  5. ↑ "Nintendo Power - The 20th Anniversary Issue!" (Magazine)|format= requires |url= (help). Nintendo Power. 231 (231). San Francisco, California: Future US. August 2008: 71. Unknown parameter |month= ignored (help); |access-date= requires |url= (help)CS1 maint: Date and year (link)
  6. ↑ ScrewAttack: Top 10 NES Games