Corden, W. (1971). The theory of protection. Oxford Uni. press.
Chicago-čujuhus (17. p.)Corden, W. The Theory of Protection. London: Oxford Uni. press, 1971.
MLA-čujuhus (9. p.)Corden, W. The Theory of Protection. Oxford Uni. press, 1971.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.