APA (7th ed.) Citation

Collins, R. (1973). The Medes and Persians: Conquerors and Diplomats.

Chicago Style (17th ed.) Citation

Collins, Robert. The Medes and Persians: Conquerors and Diplomats. London, 1973.

MLA (8th ed.) Citation

Collins, Robert. The Medes and Persians: Conquerors and Diplomats. 1973.

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