Himstreet, W. C., & Baty, W. M. (1976). Programmed learning aid for business communications. Learning Systems Co.
Cita Chicago (17th ed.)Himstreet, William C., i Wayne Murlin Baty. Programmed Learning Aid for Business Communications. Homewood, Ill: Learning Systems Co, 1976.
Cita MLA (9th ed.)Himstreet, William C., i Wayne Murlin Baty. Programmed Learning Aid for Business Communications. Learning Systems Co, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.