APA (7th ed.) Citation

Yapp, M., Killingray, M., & O'Connor, E. (1974). Chingis Khan and the Mongol Empire (1. publ.). Harrap.

Chicago Style (17th ed.) Citation

Yapp, Malcolm, Margaret Killingray, and Edmund O'Connor. Chingis Khan and the Mongol Empire. 1. publ. London: Harrap, 1974.

MLA (9th ed.) Citation

Yapp, Malcolm, et al. Chingis Khan and the Mongol Empire. 1. publ. Harrap, 1974.