Cita APA

Phelps, O. W., & Phelps, O. W. (1950). Introduction to labor economics. New York, New York: McGraw-Hill.

Citación estilo Chicago

Phelps, Orme Wheelock, y Orme Wheelock Phelps. Introduction to Labor Economics. New York, New York: McGraw-Hill, 1950.

Cita MLA

Phelps, Orme Wheelock, y Orme Wheelock Phelps. Introduction to Labor Economics. New York, New York: McGraw-Hill, 1950.