Ray,GL. (1999). Extention communication and management (4.). Naya Prokash.
Chicago Edition CitationRay,GL. Extention Communication and Management. 4. Calcutta: Naya Prokash, 1999.
Cita MLARay,GL. Extention Communication and Management. 4. Naya Prokash, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.