Παραπομπή APA

Needham, A. E. (1974). Significance of zoochromes. Springer.

Παραπομπή Chicago Style

Needham, Arthur E. Significance of Zoochromes. New york: Springer, 1974.

Παραπομπή MLA

Needham, Arthur E. Significance of Zoochromes. Springer, 1974.