Cita APA (7th ed.)

Conference Board & Bursk, E. C. (1973). Challenge to leadership: Managing in a changing world. Free Press.

Cita Chicago (17th ed.)

Conference Board i Edward Collins Bursk. Challenge to Leadership: Managing in a Changing World. New York: Free Press, 1973.

Cita MLA (9th ed.)

Conference Board i Edward Collins Bursk. Challenge to Leadership: Managing in a Changing World. Free Press, 1973.