Gaya APA

J., H, , H., R., W, , S. (1980). Introduction and guide to the marine bluegreen algae . New York: John Wiley and Sons.

Gaya MLA

J., Humm, , Harold., R., Wicks, , Susanne. "Introduction and guide to the marine bluegreen algae". New York: John Wiley and Sons, 1980. Text.