Gaya APA

Freedman, Bill. (1989). Environmental Ecology . San Diego: ACADEMIC PRESS.

Gaya Chicago

Freedman, Bill. Environmental Ecology. San Diego: ACADEMIC PRESS, 1989. Teks.

Gaya MLA

Freedman, Bill. Environmental Ecology. San Diego: ACADEMIC PRESS, 1989. Teks.

Gaya Turabian

Freedman, Bill. Environmental Ecology. San Diego: ACADEMIC PRESS, 1989. Teks.