APA aipamena

Waring, R. (2009). Volcano trek. London ; United States: Heinle, Cengage Learning.

Chicago Style aipamena

Waring, Rob. Volcano Trek. London ; United States: Heinle, Cengage Learning, 2009.

MLA aipamena

Waring, Rob. Volcano Trek. London ; United States: Heinle, Cengage Learning, 2009.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.