(1978). PL/I and PL/C language manual / C. William Gear.
Cita Chicago (17th ed.)PL/I and PL/C Language Manual / C. William Gear. 1978.
Cita MLA (9th ed.)PL/I and PL/C Language Manual / C. William Gear. 1978.
Atenció: Aquestes cites poden no estar 100% correctes.