APA (7th ed.) Citation

Crum, H. A. (1957). Some additions to the California moss flora ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Crum, Howard Alvin. Some Additions to the California Moss Flora. [Sonderdr.]. 1957.

MLA (9th ed.) Citation

Crum, Howard Alvin. Some Additions to the California Moss Flora. [Sonderdr.]. 1957.

Warning: These citations may not always be 100% accurate.