Cita APA

Keay, J. (2000). History: From the earliest civilizations to the boom of the twenty-first century (NA.). Harper Press.

Citación estilo Chicago

Keay, John. History: From the Earliest Civilizations to the Boom of the Twenty-first Century. NA. London: Harper Press, 2000.

Cita MLA

Keay, John. History: From the Earliest Civilizations to the Boom of the Twenty-first Century. NA. Harper Press, 2000.