Gaya APA

Macmillan Reuised Encyclopedia of Science 3 The Earth : Our Planet - Iss Land, Sea, and Air. (1997). New York: Macmillan Library Reference.

Gaya MLA

Macmillan Reuised Encyclopedia of Science 3 The Earth : Our Planet - Iss Land, Sea, and Air. Cet. 1. New York: Macmillan Library Reference, 1997. Text.