Cita APA (7a ed.)

Lange, O., & Walker, A. H. (1963). Political economy. Macmillan.

Cita Chicago Style (17a ed.)

Lange, Oskar, y A. H. Walker. Political Economy. New York: Macmillan, 1963.

Cita MLA (9a ed.)

Lange, Oskar, y A. H. Walker. Political Economy. Macmillan, 1963.