APA (7th ed.) Citation

Swingle, D. B. (1946). A texbook of systematic botany (3rd ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Swingle, Deane Bret. A Texbook of Systematic Botany. 3rd ed. New York and London: McGraw-Hill, 1946.

MLA (9th ed.) Citation

Swingle, Deane Bret. A Texbook of Systematic Botany. 3rd ed. McGraw-Hill, 1946.