APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Benson, Lyman David. Plant Classification. 2. ed. Lexington, Mass. [u.a.]: Heath, 1979.

MLA (9th ed.) Citation

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