Kahn, R. I. (1972). The letter and the spirit. Word Books.
芝加哥风格引文Kahn, Robert I. The Letter and the Spirit. Waco, Texas: Word Books, 1972.
MLA引文Kahn, Robert I. The Letter and the Spirit. Word Books, 1972.
警告：这些引文格式不一定是100％准确.
APA引文