Scott, R. C., & Sondak, N. E. (1970). PL/I for programmers. Addison-Wesley Pub. Co.
芝加哥风格引文Scott, Ramon C., 与 Norman E. Sondak. PL/I for Programmers. Reading Mass.,: Addison-Wesley Pub. Co, 1970.
MLA引文Scott, Ramon C., 与 Norman E. Sondak. PL/I for Programmers. Addison-Wesley Pub. Co, 1970.
警告：这些引文格式不一定是100％准确.