APA (7th ed.) Citation

Evans, A. W. (1920). North American species of Asterella. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Evans, Alexander W. North American Species of Asterella. [Place of publication not identified]: U.S. Government Printing Office, 1920.

MLA (9th ed.) Citation

Evans, Alexander W. North American Species of Asterella. U.S. Government Printing Office, 1920.