APA (7th ed.) Citation

Olmstead, A. T. (1948). History of the Persian Empire (Achaemenid Period).

Chicago Style (17th ed.) Citation

Olmstead, A. T. History of the Persian Empire (Achaemenid Period). 1948.

MLA (8th ed.) Citation

Olmstead, A. T. History of the Persian Empire (Achaemenid Period). 1948.

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