APA (7th ed.) Citation

Jonker, F. P. (1935). Hypericum canadense L ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Jonker, Fredrik P. Hypericum Canadense L. [Sonderdr.]. 1935.

MLA (9th ed.) Citation

Jonker, Fredrik P. Hypericum Canadense L. [Sonderdr.]. 1935.

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