APA ציטוט

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

Trích dẫn kiểu Chicago

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

ציטוט MLA

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