APA (7th ed.) Citation

Gunn, C. R., & Seldin, M. J. (1976). Seeds and fruits of North American papaveraceae. U.S. Dept. of Agriculture, Agricultural Research Service, [Northeastern Region].

Chicago Style (17th ed.) Citation

Gunn, Charles R., and Margaret J. Seldin. Seeds and Fruits of North American Papaveraceae. [Washington]: U.S. Dept. of Agriculture, Agricultural Research Service, [Northeastern Region], 1976.

MLA (9th ed.) Citation

Gunn, Charles R., and Margaret J. Seldin. Seeds and Fruits of North American Papaveraceae. U.S. Dept. of Agriculture, Agricultural Research Service, [Northeastern Region], 1976.