Ball, G. W. (1982). The past has another pattern. New York: Norton and Company.
Trích dẫn kiểu ChicagoBall, George W. The Past Has Another Pattern. New York: Norton and Company, 1982.
ציטוט MLABall, George W. The Past Has Another Pattern. New York: Norton and Company, 1982.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.