APA (7th ed.) Citation

Hitchcock, A. S. (1925). North American species of Stipa; Synopsis of South American species of Stipa. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Hitchcock, A. S. North American Species of Stipa; Synopsis of South American Species of Stipa. [Place of publication not identified]: U.S. Government Printing Office, 1925.

MLA (9th ed.) Citation

Hitchcock, A. S. North American Species of Stipa; Synopsis of South American Species of Stipa. U.S. Government Printing Office, 1925.