Culbertson, J. (1964). Full employment or stagnation (McGraw-Hill series in psychology.). McGraw-Hill.
Dyfyniad Arddull ChicagoCulbertson, J.M. Full Employment or Stagnation. McGraw-Hill series in psychology. New York: McGraw-Hill, 1964.
Dyfyniad MLACulbertson, J.M. Full Employment or Stagnation. McGraw-Hill series in psychology. McGraw-Hill, 1964.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.