Παραπομπή APA

Dougherty, E. C. (1963). Lower metazoa: :Comparative biology and phylogeny. University press.

Παραπομπή Chicago Style

Dougherty, Ellsworth C. Lower Metazoa: :Comparative Biology and Phylogeny. New york: University press, 1963.

Παραπομπή MLA

Dougherty, Ellsworth C. Lower Metazoa: :Comparative Biology and Phylogeny. University press, 1963.