APA (7th ed.) Citation

Mathias, M. E., & Constance, L. (1942). Umbelliferae ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Mathias, Mildred E., and Lincoln Constance. Umbelliferae. [Sonderdr.]. 1942.

MLA (9th ed.) Citation

Mathias, Mildred E., and Lincoln Constance. Umbelliferae. [Sonderdr.]. 1942.

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