Cita APA (7a ed.)
Garraty, J. A., & Gay, P. The Columbia History of the World. Harper and Row.
Cita estilo Chicago (17a ed.)
Garraty, John A., y Peter Gay. The Columbia History of the World. Nueva York, EUA: Harper and Row.
Cita MLA (9a ed.)
Garraty, John A., y Peter Gay. The Columbia History of the World. Harper and Row.
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