APA (7th ed.) Zitazioa

BPB Publications. (1990). Ingenuity Unlimited. BPB Publications.

Chicago Style (17th ed.) Zitazioa

BPB Publications. Ingenuity Unlimited. New Delhi: BPB Publications, 1990.

MLA (9th ed.) Zitazioa

BPB Publications. Ingenuity Unlimited. BPB Publications, 1990.