APA (7th ed.) Citation

Curchin, L. (1980). Old Age in Sumer. Life Expectancy and Social Status of the Elderly.

Chicago Style (17th ed.) Citation

Curchin, Leonard. Old Age in Sumer. Life Expectancy and Social Status of the Elderly. 1980.

MLA (8th ed.) Citation

Curchin, Leonard. Old Age in Sumer. Life Expectancy and Social Status of the Elderly. 1980.

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