Cohen, D. (1992). College algebra (3rd ed.). West Publishing Co..
Chicago-čujuhus (17. p.)Cohen, David. College Algebra. 3rd ed. New York: West Publishing Co., 1992.
MLA-čujuhus (9. p.)Cohen, David. College Algebra. 3rd ed. West Publishing Co., 1992.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.