APA (7th ed.) Citation

Portes, A., & Walton, J. (1981). Labor, class, and the international system. Academic Press.

Chicago Style (17th ed.) Citation

Portes, Alejandro, and John Walton. Labor, Class, and the International System. New York: Academic Press, 1981.

MLA (9th ed.) Citation

Portes, Alejandro, and John Walton. Labor, Class, and the International System. Academic Press, 1981.