APA (7th ed.) Citation

International Business Machines Corporation. (1960). A PL/I primer: Student text. International Business Machines Corp..

Chicago Style (17th ed.) Citation

International Business Machines Corporation. A PL/I Primer: Student Text. N.Y.: International Business Machines Corp., 1960.

MLA (8th ed.) Citation

International Business Machines Corporation. A PL/I Primer: Student Text. International Business Machines Corp., 1960.