American (19328117). American Enterprise Institute for Public Policy Research.
Chicago-čujuhus (17. p.)American (19328117). American Enterprise Institute for Public Policy Research.
MLA-čujuhus (9. p.)American (19328117). American Enterprise Institute for Public Policy Research.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.