Smith, K. J. (1987). Trigonometry for college students (4th ed.). Brooks/Cole Pub. Co..
Chicago-čujuhus (17. p.)Smith, Karl J. Trigonometry for College Students. 4th ed. Monterey, Calif.: Brooks/Cole Pub. Co., 1987.
MLA-čujuhus (9. p.)Smith, Karl J. Trigonometry for College Students. 4th ed. Brooks/Cole Pub. Co., 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.