APA (7th ed.) Citation

Frye, R. N., & Koch, H. (1983). Achaemenid Echos in Sasanian Times.

Chicago Style (17th ed.) Citation

Frye, R. N., and H. Koch. Achaemenid Echos in Sasanian Times. 1983.

MLA (8th ed.) Citation

Frye, R. N., and H. Koch. Achaemenid Echos in Sasanian Times. 1983.

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