APA (7th ed.) Citation

Crum, H. A., & Anderson, L. E. (1981). Mosses of North America. [Duke University, Department of Botany].

Chicago Style (17th ed.) Citation

Crum, Howard A., and Lewis Edward Anderson. Mosses of North America. [Durham, N.C.]: [Duke University, Department of Botany], 1981.

MLA (9th ed.) Citation

Crum, Howard A., and Lewis Edward Anderson. Mosses of North America. [Duke University, Department of Botany], 1981.