APA (7th ed.) Citation

Kramer, S. N. (1956). History Begins at Sumer.

Chicago Style (17th ed.) Citation

Kramer, S. N. History Begins at Sumer. 1956.

MLA (8th ed.) Citation

Kramer, S. N. History Begins at Sumer. 1956.

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