APA

Keppel F., . (1966). The necessary revolution in American education. New York: Harper & Row.

Chicago

Keppel Francis, . 1966. The necessary revolution in American education. New York: Harper & Row.

Harvard

Keppel F., . (1966). The necessary revolution in American education. New York: Harper & Row.

MLA

Keppel Francis, . The necessary revolution in American education. New York: Harper & Row. 1966.