Cita APA

Artjur, W. (1990). The green machine: Ecology and the balance of nature. Blackwell.

Citación estilo Chicago

Artjur, Wallace. The Green Machine: Ecology and the Balance of Nature. oxford: Blackwell, 1990.

Cita MLA

Artjur, Wallace. The Green Machine: Ecology and the Balance of Nature. Blackwell, 1990.