Παραπομπή APA

Bleeker, P. (1972). Papers on fishes V4. A.Asher&co.

Παραπομπή Chicago Style

Bleeker, Pieter. Papers on Fishes V4. Amsterdam: A.Asher&co, 1972.

Παραπομπή MLA

Bleeker, Pieter. Papers on Fishes V4. A.Asher&co, 1972.