Samuelson, P. (1973). Economics (9th.). McGraw Hill.
Chicago-čujuhus (17. p.)Samuelson, Paul. Economics. 9th. NULL: McGraw Hill, 1973.
MLA-čujuhus (9. p.)Samuelson, Paul. Economics. 9th. McGraw Hill, 1973.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.