Isaak, A. (1987). An Introduction to politics. Scott, Foresman.
Chicago-čujuhus (17. p.)Isaak, Alan. An Introduction to Politics. London: Scott, Foresman, 1987.
MLA-čujuhus (9. p.)Isaak, Alan. An Introduction to Politics. Scott, Foresman, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.