APA (7th ed.) Citation

Frayne, D. R. (2008). Presargonic Period (2700-2350 BC).

Chicago Style (17th ed.) Citation

Frayne, Douglas R. Presargonic Period (2700-2350 BC). Toronto/Buffalo/London, 2008.

MLA (8th ed.) Citation

Frayne, Douglas R. Presargonic Period (2700-2350 BC). 2008.

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