APA (7th ed.) Citation

Kaalaas, B. (1907). Über Cephalozia borealis Lindb ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Kaalaas, B. Über Cephalozia Borealis Lindb. [Sonderdr.]. 1907.

MLA (9th ed.) Citation

Kaalaas, B. Über Cephalozia Borealis Lindb. [Sonderdr.]. 1907.

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