APA (7th ed.) Citation

Tryon, R. M. (1960). Ferns of California ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Tryon, Rolla Milton. Ferns of California. [Sonderdr.]. 1960.

MLA (9th ed.) Citation

Tryon, Rolla Milton. Ferns of California. [Sonderdr.]. 1960.

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