Cita APA (7th ed.)

Cottrell, J., & Sund, H. (1979). Mexico City. Time-Life International.

Cita Chicago (17th ed.)

Cottrell, John, i Harold Sund. Mexico City. Amsterdam: Time-Life International, 1979.

Cita MLA (9th ed.)

Cottrell, John, i Harold Sund. Mexico City. Time-Life International, 1979.