APA (7th ed.) Citation

Hanfmann, G. M. A., & Hanfmann, I. (1972). Letters from Sardis. Harvard University Press.

Chicago Style (17th ed.) Citation

Hanfmann, George M. A., and Ilse Hanfmann. Letters from Sardis. Cambridge: Harvard University Press, 1972.

MLA (9th ed.) Citation

Hanfmann, George M. A., and Ilse Hanfmann. Letters from Sardis. Harvard University Press, 1972.