Nellis , J. (1997). The essence of the economy (2nd.). PHI.
Chicago-čujuhus (17. p.)Nellis , Joseph. The Essence of the Economy. 2nd. New Delhi: PHI, 1997.
MLA-čujuhus (9. p.)Nellis , Joseph. The Essence of the Economy. 2nd. PHI, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.