Dyfyniad APA

Rowlands,Mark. (2000). Environmental crisis: Understanding the value of nature. Macmillan.

Dyfyniad Arddull Chicago

Rowlands,Mark. Environmental Crisis: Understanding the Value of Nature. London: Macmillan, 2000.

Dyfyniad MLA

Rowlands,Mark. Environmental Crisis: Understanding the Value of Nature. Macmillan, 2000.

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