Cita APA

Smith, G. M. n. 1., & Smith, G. M. n. 1. (1950). The fresh water algae of the United States (2. edition.). New York, New York: McGraw-Hill.

Citación estilo Chicago

Smith, Gilbert Morgan n. 1885, y Gilbert Morgan n. 1885 Smith. The Fresh Water Algae of the United States. 2. edition. New York, New York: McGraw-Hill, 1950.

Cita MLA

Smith, Gilbert Morgan n. 1885, y Gilbert Morgan n. 1885 Smith. The Fresh Water Algae of the United States. 2. edition. New York, New York: McGraw-Hill, 1950.