SAMUELSON, P. A. (1967). Economics an introductory analysis. McGraw-Hill.
Chicago-čujuhus (17. p.)SAMUELSON, Paul A. Economics an Introductory Analysis. New York: McGraw-Hill, 1967.
MLA-čujuhus (9. p.)SAMUELSON, Paul A. Economics an Introductory Analysis. McGraw-Hill, 1967.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.