APA način citiranja

Vial, J. L. (1966). Variation in altitudinal populations of the salamander, Bolitoglossa subpalmata, on the Cerro de la Muerte, Costa Rica.

Čikaški stil citiranja

Vial, James L. Variation in Altitudinal Populations of the Salamander, Bolitoglossa Subpalmata, On the Cerro De La Muerte, Costa Rica. 1966.

MLA način citiranja

Vial, James L. Variation in Altitudinal Populations of the Salamander, Bolitoglossa Subpalmata, On the Cerro De La Muerte, Costa Rica. 1966.