Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.