- & FISHER, R. C. [. (1975). Introductory mathematics: A prelude to calculus. Charles E. Merril Pub. Co.
Chicago-čujuhus (17. p.)- juo Robert C. [dkk.] FISHER. Introductory Mathematics: A Prelude to Calculus. Columbus: Charles E. Merril Pub. Co, 1975.
MLA-čujuhus (9. p.)- juo Robert C. [dkk.] FISHER. Introductory Mathematics: A Prelude to Calculus. Charles E. Merril Pub. Co, 1975.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.