एपीए उद्धरण

Charles Philip Lecht. (1968). The programmer's PL/1: A complete reference. New York: McGraw-Hill.

शिकागो स्टाइल उद्धरण

Charles Philip Lecht. The Programmer's PL/1: A Complete Reference. New York: McGraw-Hill, 1968.

एमएलए उद्धरण

Charles Philip Lecht. The Programmer's PL/1: A Complete Reference. New York: McGraw-Hill, 1968.