APA (7th ed.) Citation

Gurney, O. R. (1964). The Hittites (2. ed., repr.). Penguin Books.

Chicago Style (17th ed.) Citation

Gurney, Oliver R. The Hittites. 2. ed., repr. Harmondsworth: Penguin Books, 1964.

MLA (9th ed.) Citation

Gurney, Oliver R. The Hittites. 2. ed., repr. Penguin Books, 1964.