Cita APA (7a ed.)
Samuelson, P. A. (1983). Thünen at two hundred. Journal of Economic Literature, 21, 1468-1489.
Cita Chicago Style (17a ed.)
Samuelson, Paul Anthony. "Thünen at Two Hundred." Journal of Economic Literature 21 (1983): 1468-1489.
Cita MLA (9a ed.)
Samuelson, Paul Anthony. "Thünen at Two Hundred." Journal of Economic Literature, vol. 21, 1983, pp. 1468-1489.
Precaución: Estas citas no son 100% exactas.