Παραπομπή APA

BPP Learning media. (2009). Economics/BPP Learning media. Viva books.

Παραπομπή Chicago Style

BPP Learning media. Economics/BPP Learning Media. New Delhi: Viva books, 2009.

Παραπομπή MLA

BPP Learning media. Economics/BPP Learning Media. Viva books, 2009.