APA (7th ed.) Citation

Hubbard, C. E. (1946). Henrardia, a new genus of the Gramineae ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Hubbard, Charles Edward. Henrardia, a New Genus of the Gramineae. [Sonderdr.]. 1946.

MLA (9th ed.) Citation

Hubbard, Charles Edward. Henrardia, a New Genus of the Gramineae. [Sonderdr.]. 1946.

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