Bilas, R. A. (1967). Micro Economic Theory. McGraw-Hill.
Chicago-čujuhus (17. p.)Bilas, Richard A. Micro Economic Theory. London: McGraw-Hill, 1967.
MLA-čujuhus (9. p.)Bilas, Richard A. Micro Economic Theory. McGraw-Hill, 1967.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.