GROFF JAMES R. (1983). UNDERSTANDING UNIX A CONCEPTUAL GUIDE. QUE CORPORATION.
芝加哥风格引文GROFF JAMES R. UNDERSTANDING UNIX A CONCEPTUAL GUIDE. INDIANA: QUE CORPORATION, 1983.
MLA引文GROFF JAMES R. UNDERSTANDING UNIX A CONCEPTUAL GUIDE. QUE CORPORATION, 1983.
警告：这些引文格式不一定是100％准确.