APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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