APA (7th ed.) Citation

Gill, T. (1901). Note on the genus Hollandia of Karsch. [publisher not identified].

Chicago Style (17th ed.) Citation

Gill, Theodore. Note on the Genus Hollandia of Karsch. [New York]: [publisher not identified], 1901.

MLA (9th ed.) Citation

Gill, Theodore. Note on the Genus Hollandia of Karsch. [publisher not identified], 1901.