Wittich, W. A., & Schuller, C. F. (1973). Instructional technology: Its nature and use (5th ed.). Harper & Row.
芝加哥风格引文Wittich, Walter Arno, 与 Charles Francis Schuller. Instructional Technology: Its Nature and Use. 5th ed. New York: Harper & Row, 1973.
MLA引文Wittich, Walter Arno, 与 Charles Francis Schuller. Instructional Technology: Its Nature and Use. 5th ed. Harper & Row, 1973.
警告：这些引文格式不一定是100％准确.