)٥١( S. Feiner and B. Roberts &quot; Hidden by the invisible hand: neoclassical economic theory and textbook treatment of race and gender &quot; , Gender and Society, vol. 4. no. 2 (june 1990), pp. 159-181.
51/ S. Feiner and B. Roberts, &quot; Hidden by the invisible hand: neoclassical economic theory and textbook treatment of race and gender &quot; , Gender and Society, vol. 4, No. 2 (June 1990), pp. 159-181.