APA (7th ed.) Citation

Clements, F. E., & Clements, E. G. S. (1928). Flower families and ancestors. The H. W. Wilson company.

Chicago Style (17th ed.) Citation

Clements, Frederic E., and Edith Gertrude Schwartz Clements. Flower Families and Ancestors. New York: The H. W. Wilson company, 1928.

MLA (9th ed.) Citation

Clements, Frederic E., and Edith Gertrude Schwartz Clements. Flower Families and Ancestors. The H. W. Wilson company, 1928.