Wardhaugh, R. (1977). Introduction to linguistics (2nd ed.). McGraw-Hill.
Chicago-čujuhus (17. p.)Wardhaugh, Ronald. Introduction to Linguistics. 2nd ed. New York: McGraw-Hill, 1977.
MLA-čujuhus (9. p.)Wardhaugh, Ronald. Introduction to Linguistics. 2nd ed. McGraw-Hill, 1977.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.