Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Swingle, Deane B. A Textbook of Systematic Botany. 3a. ed. Nueva York: McGraw-Hill, 1946.

Cita MLA (9th ed.)

Swingle, Deane B. A Textbook of Systematic Botany. 3a. ed. McGraw-Hill, 1946.