APA (7th ed.) Citation

Proctor, G. R. (1961). Notes on lesser Antillean Ferns ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Proctor, George R. Notes on Lesser Antillean Ferns. [Sonderdr.]. 1961.

MLA (9th ed.) Citation

Proctor, George R. Notes on Lesser Antillean Ferns. [Sonderdr.]. 1961.

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