APA (7th ed.) Citation

Phelps, O. W. (1967). Introduction to labor economics (4th ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Phelps, Orme Wheelock. Introduction to Labor Economics. 4th ed. New York: McGraw-Hill, 1967.

MLA (8th ed.) Citation

Phelps, Orme Wheelock. Introduction to Labor Economics. 4th ed. McGraw-Hill, 1967.