Gaya APA

Tignor, R, (. (2008). Worlds Together Worlds Apart: A Historiy of The World From the Beginnings of Humankind to the Present Volume Two . New York: W.W Norton and company.

Gaya MLA

Tignor, Robert, (et.al). "Worlds Together Worlds Apart: A Historiy of The World From the Beginnings of Humankind to the Present Volume Two". New York: W.W Norton and company, 2008. Buku Tercetak.