APA

bates r. j., gregory d. w., . (2000). Voice And Data Communications Handbook. new delhi: tata mcgraw-hill.

Chicago

bates regis j, gregory donald w, . 2000. Voice And Data Communications Handbook. new delhi: tata mcgraw-hill.

Harvard

bates r. j., gregory d. w., . (2000). Voice And Data Communications Handbook. new delhi: tata mcgraw-hill.

MLA

bates regis j, gregory donald w, . Voice And Data Communications Handbook. new delhi: tata mcgraw-hill. 2000.