Applebaum, E., & Weintraub, S. (1977). Modern economic thought. University of Pennsylvania Press.
Lua i Stíl Chicago (17ú heag.)Applebaum, Eileen, agus Sidney Weintraub. Modern Economic Thought. [Philadelphia]: University of Pennsylvania Press, 1977.
Lua MLA (9ú heag.)Applebaum, Eileen, agus Sidney Weintraub. Modern Economic Thought. University of Pennsylvania Press, 1977.