APA (7th ed.) Citation

Alston, A. H. G. (1958). Ferns from Colombia and Ecuador ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Alston, A. H. G. Ferns from Colombia and Ecuador. [Sonderdr.]. 1958.

MLA (9th ed.) Citation

Alston, A. H. G. Ferns from Colombia and Ecuador. [Sonderdr.]. 1958.

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