APA aipamena

Ball, A. S., Mackenzie, A., & Virdee, S. R. (2002). Ecology, Instant notes (2.).

Chicago Style aipamena

Ball, Andy S., Aulay Mackenzie, and Sonia R. Virdee. Ecology, Instant Notes. 2. New delhi, Viva Books, 2002.

MLA aipamena

Ball, Andy S., et al. Ecology, Instant Notes. 2. 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.