Cita APA (7th ed.)

Butler, A. D. (1961). Labor economics and institutions. Macmillan.

Cita Chicago (17th ed.)

Butler, Arthur D. Labor Economics and Institutions. New York: Macmillan, 1961.

Cita MLA (9th ed.)

Butler, Arthur D. Labor Economics and Institutions. Macmillan, 1961.