Cita APA (7th ed.)

Toynbee, A. J. Introduction. The genesis of civilizations (2a ed.).

Cita Chicago (17th ed.)

Toynbee, Arnold J. Introduction. The Genesis of Civilizations. 2a ed.

Cita MLA (8th ed.)

Toynbee, Arnold J. Introduction. The Genesis of Civilizations. 2a ed.