APA (7e ed.) Bronvermelding

Gardner, J. W. (1993). On leadership: With a preface to the paperback edition. Free Press.

Chicago (17e ed.) Bronvermelding

Gardner, John W. On Leadership: With a Preface to the Paperback Edition. New York: Free Press, 1993.

MLA (8e ed.) Bronvermelding

Gardner, John W. On Leadership: With a Preface to the Paperback Edition. Free Press, 1993.