APA (7th ed.) Citation

O'Brien-Twohig, M. (1960). Diplomatic courier. Elek Books.

Chicago Style (17th ed.) Citation

O'Brien-Twohig, Michael. Diplomatic Courier. London: Elek Books, 1960.

MLA (9th ed.) Citation

O'Brien-Twohig, Michael. Diplomatic Courier. Elek Books, 1960.

Warning: These citations may not always be 100% accurate.