Howard, M. C. (1983). Profits in economic theory. St. Martin's Press.
Chicago-čujuhus (17. p.)Howard, Michael Charles. Profits in Economic Theory. New York: St. Martin's Press, 1983.
MLA-čujuhus (9. p.)Howard, Michael Charles. Profits in Economic Theory. St. Martin's Press, 1983.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.