Lang, S. (1972). A first course in calculus (3a. ed.). Addison-Wesley.
Chicago-čujuhus (17. p.)Lang, Serge. A First Course in Calculus. 3a. ed. Reading: Addison-Wesley, 1972.
MLA-čujuhus (9. p.)Lang, Serge. A First Course in Calculus. 3a. ed. Addison-Wesley, 1972.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.