Παραπομπή APA

Berg,leo s. (1937). Classification of Fishes Both Recent and Fossil. A J Reprints.

Παραπομπή Chicago Style

Berg,leo s. Classification of Fishes Both Recent and Fossil. New Delhi: A J Reprints, 1937.

Παραπομπή MLA

Berg,leo s. Classification of Fishes Both Recent and Fossil. A J Reprints, 1937.