APA (7th ed.) Citation

Alvin, K. L., & Kershaw, K. A. (1963). The observer's book of lichens. F. Warne.

Chicago Style (17th ed.) Citation

Alvin, K. L., and Kenneth A. Kershaw. The Observer's Book of Lichens. London, New York: F. Warne, 1963.

MLA (9th ed.) Citation

Alvin, K. L., and Kenneth A. Kershaw. The Observer's Book of Lichens. F. Warne, 1963.