Παραπομπή APA

Kumar, H. D., & Singh, H. N. (1971). Text book on algae. Esat west.

Παραπομπή Chicago Style

Kumar, H. D., και H. N. Singh. Text Book on Algae. New delhi: Esat west, 1971.

Παραπομπή MLA

Kumar, H. D., και H. N. Singh. Text Book on Algae. Esat west, 1971.