APA (7th ed.) Citation

Swingle, D. B. (1946). A textbook of systematic botany (3d ed.). McGraw-Hill book company, inc..

Chicago Style (17th ed.) Citation

Swingle, Deane B. A Textbook of Systematic Botany. 3d ed. New York, London: McGraw-Hill book company, inc., 1946.

MLA (9th ed.) Citation

Swingle, Deane B. A Textbook of Systematic Botany. 3d ed. McGraw-Hill book company, inc., 1946.