Cita APA (7a ed.)

Phelps, O. W. (1955). Introduction to labor economics (2nd ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Phelps, Orme W. Introduction to Labor Economics. 2nd ed. New York: McGraw-Hill, 1955.

Cita MLA (8a ed.)

Phelps, Orme W. Introduction to Labor Economics. 2nd ed. McGraw-Hill, 1955.