APA (7th ed.) Citation

Kramer, S. N. (1981). History begins at Sumer: Thirty-nine firsts in man's recorded history (3rd rev. ed.). University of Pennsylvania Press.

Chicago Style (17th ed.) Citation

Kramer, Samuel Noah. History Begins at Sumer: Thirty-nine Firsts in Man's Recorded History. 3rd rev. ed. Philadelphia: University of Pennsylvania Press, 1981.

MLA (9th ed.) Citation

Kramer, Samuel Noah. History Begins at Sumer: Thirty-nine Firsts in Man's Recorded History. 3rd rev. ed. University of Pennsylvania Press, 1981.