APA aipamena

Lenburg, J. (2007). Viva- Facts On File guide to research. Viva Books Pvt. ltd..

Chicago Style aipamena

Lenburg, Jeff. Viva- Facts On File Guide to Research. New Delhi: Viva Books Pvt. ltd., 2007.

MLA aipamena

Lenburg, Jeff. Viva- Facts On File Guide to Research. Viva Books Pvt. ltd., 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.