APA (7th ed.) Citation

Hale, M. E. (1974). The biology of lichens (2nd ed.). American Elsevier Pub. Co..

Chicago Style (17th ed.) Citation

Hale, Mason E. The Biology of Lichens. 2nd ed. New York: American Elsevier Pub. Co., 1974.

MLA (9th ed.) Citation

Hale, Mason E. The Biology of Lichens. 2nd ed. American Elsevier Pub. Co., 1974.