APA (7th ed.) Citation

Crum, H. A. (1960). Three new species of Fissidens ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Crum, Howard Alvin. Three New Species of Fissidens. [Sonderdr.]. 1960.

MLA (9th ed.) Citation

Crum, Howard Alvin. Three New Species of Fissidens. [Sonderdr.]. 1960.

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