APA (7th ed.) Citation

Merrill, E. D. (1919). Notes on the flora of Sumatra ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Merrill, Elmer Drew. Notes on the Flora of Sumatra. [Sonderdr.]. 1919.

MLA (9th ed.) Citation

Merrill, Elmer Drew. Notes on the Flora of Sumatra. [Sonderdr.]. 1919.

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