APA

Kempfer H., . (1955). Adult education. New York: McGraw-Hill.

Chicago

Kempfer Homer, . 1955. Adult education. New York: McGraw-Hill.

Harvard

Kempfer H., . (1955). Adult education. New York: McGraw-Hill.

MLA

Kempfer Homer, . Adult education. New York: McGraw-Hill. 1955.