APA (7th ed.) Citation

Queller, D. E. (1967). The office of ambassador in the Middle Ages. Princeton University Press.

Chicago Style (17th ed.) Citation

Queller, Donald E. The Office of Ambassador in the Middle Ages. Princeton, N.J.: Princeton University Press, 1967.

MLA (9th ed.) Citation

Queller, Donald E. The Office of Ambassador in the Middle Ages. Princeton University Press, 1967.