APA (7th ed.) Citation

Weatherby, C. A. (1943). Polypodiaceae ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Weatherby, C. A. Polypodiaceae. [Sonderdr.]. 1943.

MLA (9th ed.) Citation

Weatherby, C. A. Polypodiaceae. [Sonderdr.]. 1943.

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