APA (7th ed.) Citation

Negus, A. L. (1998). The fall of the Old Kingdom: A great African drought? University Microfilms International.

Chicago Style (17th ed.) Citation

Negus, Anne Lynne. The Fall of the Old Kingdom: A Great African Drought? Ann Arbor: University Microfilms International, 1998.

MLA (9th ed.) Citation

Negus, Anne Lynne. The Fall of the Old Kingdom: A Great African Drought? University Microfilms International, 1998.