APA (7th ed.) Citation

Regel, C. v. (1942). Ranunculus borealis Trautv ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Regel, Constantin von. Ranunculus Borealis Trautv. [Sonderdr.]. 1942.

MLA (9th ed.) Citation

Regel, Constantin von. Ranunculus Borealis Trautv. [Sonderdr.]. 1942.

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