APA aipamena

Gregory, R. H., & Van Horn, R. L. (1960). Automatic data-processing systems: Principles and procedures. Wadsworth Pub. Co..

Chicago Style aipamena

Gregory, Robert Henry, and Richard L. Van Horn. Automatic Data-processing Systems: Principles and Procedures. San Fran.: Wadsworth Pub. Co., 1960.

MLA aipamena

Gregory, Robert Henry, and Richard L. Van Horn. Automatic Data-processing Systems: Principles and Procedures. Wadsworth Pub. Co., 1960.