Dyfyniad APA

Savage, J. M., & Heyer, W. R. (1968). The tree-frogs (Family Hylidae) of Costa Rica: Diagnosis and distribution.

Dyfyniad Arddull Chicago

Savage, Jay M., y W. Ronald Heyer. The Tree-frogs (Family Hylidae) of Costa Rica: Diagnosis and Distribution. 1968.

Dyfyniad MLA

Savage, Jay M., y W. Ronald Heyer. The Tree-frogs (Family Hylidae) of Costa Rica: Diagnosis and Distribution. 1968.

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