Cita APA

Gregory, R. H., & Van Horn, R. L. (1963). Automatic data-processing systems: Principles and procedures Wadsworth Pub. Co..

Citación estilo Chicago

Gregory, Robert Henry., and Richard L. Van Horn. Automatic Data-processing Systems: Principles and Procedures. 2nd ed. Belmont, Calif.: Wadsworth Pub. Co., 1963.

Cita MLA

Gregory, Robert Henry., and Richard L. Van Horn. Automatic Data-processing Systems: Principles and Procedures. 2nd ed. Belmont, Calif.: Wadsworth Pub. Co., 1963.