Tohutoro APA (7th ed.)

Heuvelmans, B. (1959). On the track of unknown animals. Hill and Wang.

Tohutoru Kātū Chicago (17th ed.)

Heuvelmans, Bernard. On the Track of Unknown Animals. Nueva York: Hill and Wang, 1959.

Tohutoro MLA (9th ed.)

Heuvelmans, Bernard. On the Track of Unknown Animals. Hill and Wang, 1959.