Dyfyniad APA

Bille, T. (1998). Eggs and hatchlings of the Mexican salamander Pseudoeurycea cephalica (Caudata: Plethodontidae).

Dyfyniad Arddull Chicago

Bille, Thomas. Eggs and Hatchlings of the Mexican Salamander Pseudoeurycea Cephalica (Caudata: Plethodontidae). 1998.

Dyfyniad MLA

Bille, Thomas. Eggs and Hatchlings of the Mexican Salamander Pseudoeurycea Cephalica (Caudata: Plethodontidae). 1998.

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