Cita APA (7a ed.)

Harr, J. E. (1969). The professional diplomat. Princeton University Press.

Cita Chicago Style (17a ed.)

Harr, John Ensor. The Professional Diplomat. Princeton [etc.]: Princeton University Press, 1969.

Cita MLA (9a ed.)

Harr, John Ensor. The Professional Diplomat. Princeton University Press, 1969.