APA引文

ROY M.K. (1991). COBOL PROGRAMMING. TATA MC GRAW HILL.

芝加哥风格引文

ROY M.K. COBOL PROGRAMMING. TATA MC GRAW HILL, 1991.

MLA引文

ROY M.K. COBOL PROGRAMMING. TATA MC GRAW HILL, 1991.

警告：这些引文格式不一定是100％准确.