Gaya APA

McWilliams, W, C., Piotrowski, H. (1990). The World Since 1945: A History of International Relations (Ed. Ke-2). Boulder-Colorado: Lynne Rienner Publishers.

Gaya MLA

McWilliams, Wayney, C., Piotrowski, Harry. "The World Since 1945: A History of International Relations". Ed. Ke-2 Boulder-Colorado: Lynne Rienner Publishers, 1990. Text.