APA (7th ed.) Citation

Foster, A. S., & Gifford, E. M. (1974). Comparative morphology of vascular plants (2d ed.). W. H. Freeman.

Chicago Style (17th ed.) Citation

Foster, Adriance S., and Ernest M. Gifford. Comparative Morphology of Vascular Plants. 2d ed. San Francisco: W. H. Freeman, 1974.

MLA (9th ed.) Citation

Foster, Adriance S., and Ernest M. Gifford. Comparative Morphology of Vascular Plants. 2d ed. W. H. Freeman, 1974.