Pigors, P. J. W., & Pigors, F. (1961). Case method in human relations: The incident process. McGraw-Hill.
Dyfyniad Arddull ChicagoPigors, Paul John William, and Faith Pigors. Case Method in Human Relations: The Incident Process. New York: McGraw-Hill, 1961.
Dyfyniad MLAPigors, Paul John William, and Faith Pigors. Case Method in Human Relations: The Incident Process. McGraw-Hill, 1961.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.