APA-viite

Supe, S. (1992). Introduction to extension education. Oxford I B H publishing company.

Chicago-tyylinen lähdeviittaus

Supe, S.V. Introduction to Extension Education. New Delhi: Oxford I B H publishing company, 1992.

MLA-viite

Supe, S.V. Introduction to Extension Education. Oxford I B H publishing company, 1992.