Riddle, D. F. (1982). Analytic geometry (3rd ed.). Wadsworth Publishing Company.
Chicago-čujuhus (17. p.)Riddle, Douglas F. Analytic Geometry. 3rd ed. California: Wadsworth Publishing Company, 1982.
MLA-čujuhus (9. p.)Riddle, Douglas F. Analytic Geometry. 3rd ed. Wadsworth Publishing Company, 1982.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.