Gumperz, John J.. Directions in socialinguistics : the ethnography of communication / John J. Gumperz and Dell Hymes. - Oxford : Basil Blackwell , 1986. - x,598p. : ill. ; 23cm . NULL ISBN: 0631149872 Rs. 272.50 Subjects--Index Terms: SOCIALINGUISTICS Dewey Class. No.: 401.9 / GUM/D