Παραπομπή APA

Dittmer, H. J. (1964). Phylogeny and form in the plant kingdom. East west.

Παραπομπή Chicago Style

Dittmer, Howard J. Phylogeny and Form in the Plant Kingdom. New delhi: East west, 1964.

Παραπομπή MLA

Dittmer, Howard J. Phylogeny and Form in the Plant Kingdom. East west, 1964.