Caldwell, G. L. (1963). American government today. W. W. Norton.
Chicago-čujuhus (17. p.)Caldwell, Gaylon L. American Government Today. Nueva York: W. W. Norton, 1963.
MLA-čujuhus (9. p.)Caldwell, Gaylon L. American Government Today. W. W. Norton, 1963.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.