APA citiranje

Claybourne, A. (1999). The Usborne encyclopedia of planet earth. London: Usborne.

Trích dẫn kiểu Chicago

Claybourne, Anna. The Usborne Encyclopedia of Planet Earth. London: Usborne, 1999.

MLA citiranje

Claybourne, Anna. The Usborne Encyclopedia of Planet Earth. London: Usborne, 1999.

Opozorilo: Ti citati niso vedno 100% točni.