APA (7th ed.) Citation

Payson, E. B. (1918). North American species of Aquilegia. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Payson, Edwin Blake. North American Species of Aquilegia. [Place of publication not identified]: U.S. Government Printing Office, 1918.

MLA (9th ed.) Citation

Payson, Edwin Blake. North American Species of Aquilegia. U.S. Government Printing Office, 1918.