Παραπομπή APA

Welch, P. S. . .. (1952). Limnology (1.). McGraw Hill Book Company.

Παραπομπή Chicago Style

Welch, Paul S. Limnology. 1. New York: McGraw Hill Book Company, 1952.

Παραπομπή MLA

Welch, Paul S. Limnology. 1. McGraw Hill Book Company, 1952.