Dyfyniad APA

Wiens, J. A. (2016). Ecological challenges and conservation conundrums: Essays and reflections for a changing world. Wiley.

Dyfyniad Arddull Chicago

Wiens, John A. Ecological Challenges and Conservation Conundrums: Essays and Reflections for a Changing World. West Sussex, England: Wiley, 2016.

Dyfyniad MLA

Wiens, John A. Ecological Challenges and Conservation Conundrums: Essays and Reflections for a Changing World. Wiley, 2016.

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