O'Leary, T. J. (1991). Computing essentials: Annual Edition 1991-1992. McGraw-Hill.
芝加哥风格引文O'Leary, Timothy J. Computing Essentials: Annual Edition 1991-1992. New York: McGraw-Hill, 1991.
MLA引文O'Leary, Timothy J. Computing Essentials: Annual Edition 1991-1992. McGraw-Hill, 1991.
警告：这些引文格式不一定是100％准确.