Wonnacott, P., & Wonnacott, R. J. (1990). Economics (4th.ed.). John Wiley & sons.
Chicago-čujuhus (17. p.)Wonnacott, Paul, juo Ronald J. Wonnacott. Economics. 4th.ed. New York: John Wiley & sons, 1990.
MLA-čujuhus (9. p.)Wonnacott, Paul, juo Ronald J. Wonnacott. Economics. 4th.ed. John Wiley & sons, 1990.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.