APA-viite

Denisen, E. L. (1979). Principles of horticulture (2.). Macmillan Publishing Company Inc.

Chicago-tyylinen lähdeviittaus

Denisen, E L. Principles of Horticulture. 2. New York: Macmillan Publishing Company Inc, 1979.

MLA-viite

Denisen, E L. Principles of Horticulture. 2. Macmillan Publishing Company Inc, 1979.