APA (7th ed.) Citation

Benson, L. D. (1979). Plant classification (2nd ed.). Heath.

Chicago Style (17th ed.) Citation

Benson, Lyman David. Plant Classification. 2nd ed. Lexington, Mass.: Heath, 1979.

MLA (9th ed.) Citation

Benson, Lyman David. Plant Classification. 2nd ed. Heath, 1979.