Hurley, J. F. (1971). Litton's Problematical recreations. Van Nostrand Reinhold Co.
芝加哥风格引文Hurley, James F. Litton's Problematical Recreations. New York: Van Nostrand Reinhold Co, 1971.
MLA引文Hurley, James F. Litton's Problematical Recreations. Van Nostrand Reinhold Co, 1971.
警告：这些引文格式不一定是100％准确.