APA (7th ed.) Citation

Alston, A. H. G. (1939). Fern notes ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Alston, A. H. G. Fern Notes. [Sonderdr.]. 1939.

MLA (9th ed.) Citation

Alston, A. H. G. Fern Notes. [Sonderdr.]. 1939.

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