Cita APA (7a ed.)

Sin autor & International Business Machines Corporation - IBM. (1985). Pascal/VS: Programmer's guide (3rd ed.). [S.n.].

Cita Chicago Style (17a ed.)

Sin autor y International Business Machines Corporation - IBM. Pascal/VS: Programmer's Guide. 3rd ed. San Jose: [S.n.], 1985.

Cita MLA (9a ed.)

Sin autor y International Business Machines Corporation - IBM. Pascal/VS: Programmer's Guide. 3rd ed. [S.n.], 1985.