Dyfyniad APA
Schmitz, O. J. (2007). Ecology and ecosystem conservation. Island Press.
Dyfyniad Arddull Chicago
Schmitz, Oswald J. Ecology and Ecosystem Conservation. Washington, DC: Island Press, 2007.
Dyfyniad MLA
Schmitz, Oswald J. Ecology and Ecosystem Conservation. Island Press, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.