Gaya APA

Tignor, R., Adelman, J. (2002). Worlds together, worlds apart : a history of modern world from the mongol empire to the present (1). New York: W W norton.

Gaya MLA

Tignor, Robert., Adelman, Jeremy. "Worlds together, worlds apart : a history of modern world from the mongol empire to the present". 1 New York: W W norton, 2002. Text.