APA (7th ed.) Citation

Koch, L. W. (1933). Investigations on black knot of plums and cheries ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Koch, L. W. Investigations on Black Knot of Plums and Cheries. [Sonderdr.]. 1933.

MLA (9th ed.) Citation

Koch, L. W. Investigations on Black Knot of Plums and Cheries. [Sonderdr.]. 1933.

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