Cita APA (7a ed.)
Helsley, R. W., & Strange, W. C. (1991). Exclusion and the theory of clubs. Canadian Journal of Economics, 24, 888-900.
Cita Chicago Style (17a ed.)
Helsley, Robert W., y William C. Strange. "Exclusion and the Theory of Clubs." Canadian Journal of Economics 24 (1991): 888-900.
Cita MLA (9a ed.)
Helsley, Robert W., y William C. Strange. "Exclusion and the Theory of Clubs." Canadian Journal of Economics, vol. 24, 1991, pp. 888-900.
Precaución: Estas citas no son 100% exactas.