APA (7th ed.) Citation

Rydberg, P. A. (1965). Flora of the prairies and plains of central North America. Published for the New York Botanical Garden by Hafner Pub. Co..

Chicago Style (17th ed.) Citation

Rydberg, Per Axel. Flora of the Prairies and Plains of Central North America. New York: Published for the New York Botanical Garden by Hafner Pub. Co., 1965.

MLA (9th ed.) Citation

Rydberg, Per Axel. Flora of the Prairies and Plains of Central North America. Published for the New York Botanical Garden by Hafner Pub. Co., 1965.