Cita APA (7a ed.)

IBM Corp. (1968). Introduction to IBM data processing systems (2nd ed.). s.n.

Cita Chicago Style (17a ed.)

IBM Corp. Introduction to IBM Data Processing Systems. 2nd ed. White Plains, N.Y.: s.n, 1968.

Cita MLA (8a ed.)

IBM Corp. Introduction to IBM Data Processing Systems. 2nd ed. s.n, 1968.