APA-referens (7:e uppl.)

Essert, P. L. (1951). Creative leadership of adult education. Prentice-Hall.

Chicago-referens (17:e uppl.)

Essert, Paul L. Creative Leadership of Adult Education. New York: Prentice-Hall, 1951.

MLA-referens (9:e uppl.)

Essert, Paul L. Creative Leadership of Adult Education. Prentice-Hall, 1951.