DuBrin, A. J. (1988). Human relations: A job oriented approach (4th ed.). Prentice Hall.
Dyfyniad Arddull ChicagoDuBrin, Andrew J. Human Relations: A Job Oriented Approach. 4th ed. Englewood Cliffs, N.J: Prentice Hall, 1988.
Dyfyniad MLADuBrin, Andrew J. Human Relations: A Job Oriented Approach. 4th ed. Prentice Hall, 1988.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.