APA Citatie

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

Chicago Style citaat

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

MLA citatie

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