Style de citation APA (7e éd.)

Gifford, E. M., & Foster, A. S. (1989). Morphology and evolution of vascular plants (3rd ed.). W. H. Freeman and Co..

Style de citation Chicago (17e éd.)

Gifford, Ernest M., et Adriance S. Foster. Morphology and Evolution of Vascular Plants. 3rd ed. New York: W. H. Freeman and Co., 1989.

Style de citation MLA (8e éd.)

Gifford, Ernest M., et Adriance S. Foster. Morphology and Evolution of Vascular Plants. 3rd ed. W. H. Freeman and Co., 1989.