Παραπομπή APA

O'Brien,Derek. (2006). The Penguin - CNBC.TV 18 business yearbook 2006-07. Penguin.

Παραπομπή Chicago Style

O'Brien,Derek. The Penguin - CNBC.TV 18 Business Yearbook 2006-07. Delhi: Penguin, 2006.

Παραπομπή MLA

O'Brien,Derek. The Penguin - CNBC.TV 18 Business Yearbook 2006-07. Penguin, 2006.