Ruffin, R. (1988). Modern price theory. Scott, Foresman/Little.
Cita Chicago Style (17a ed.)Ruffin, Roy. Modern Price Theory. Glenview: Scott, Foresman/Little, 1988.
Cita MLA (8a ed.)Ruffin, Roy. Modern Price Theory. Scott, Foresman/Little, 1988.
Precaución: Estas citas no son 100% exactas.