Azar, b. s. (1989). Understanding and using english grammar. Prentice Hall Regents.
Chicago-čujuhus (17. p.)Azar, betty schrampher. Understanding and Using English Grammar. Prentice Hall Regents, 1989.
MLA-čujuhus (9. p.)Azar, betty schrampher. Understanding and Using English Grammar. Prentice Hall Regents, 1989.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.