Gwynn, J. M. (1960). Curriculum principles and social trends (3rd ed.). Macmillan.
芝加哥风格引文Gwynn, John Minor. Curriculum Principles and Social Trends. 3rd ed. New York: Macmillan, 1960.
MLA引文Gwynn, John Minor. Curriculum Principles and Social Trends. 3rd ed. Macmillan, 1960.
警告：这些引文格式不一定是100％准确.