APA aipamena

BPI WORLDWIDE. QUESTIONS & ANSWERS INVENTIONS AND DISCOVERIES. BPI WORLDWIDE.

Chicago Style aipamena

BPI WORLDWIDE. QUESTIONS & ANSWERS INVENTIONS AND DISCOVERIES. UNITED KINGDOM: BPI WORLDWIDE.

MLA aipamena

BPI WORLDWIDE. QUESTIONS & ANSWERS INVENTIONS AND DISCOVERIES. BPI WORLDWIDE.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.