Irwin. Peddling Protectionism. Princeton University Press.
Chicago-čujuhus (17. p.)Irwin. Peddling Protectionism. Princeton University Press.
MLA-čujuhus (9. p.)Irwin. Peddling Protectionism. Princeton University Press.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.