Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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