Keay, J. (2000). History: From the earliest civilizations to the boom of the twenty-first century (NA.). Harper Press.
Lua i Stíl Chicago (17ú heag.)Keay, John. History: From the Earliest Civilizations to the Boom of the Twenty-first Century. NA. London: Harper Press, 2000.
Lua MLA (9ú heag.)Keay, John. History: From the Earliest Civilizations to the Boom of the Twenty-first Century. NA. Harper Press, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.