Dyfyniad APA

(2010).  Safe passages: Highways, wildlife and habitat connectivity.  Oislandpress.

Dyfyniad Arddull Chicago

 Safe Passages: Highways, Wildlife and Habitat Connectivity.  Oislandpress, 2010.

Dyfyniad MLA

 Safe Passages: Highways, Wildlife and Habitat Connectivity.  Oislandpress, 2010.

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