Phelps, O. W. (1955). Introduction to labour economics/4e (4th ed.). McGraw Hill.
Chicago Edition CitationPhelps, Orme W. Introduction to Labour Economics/4e. 4th ed. New York: McGraw Hill, 1955.
Deismireacht MLAPhelps, Orme W. Introduction to Labour Economics/4e. 4th ed. McGraw Hill, 1955.
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