001: 80709
003: Starlibrary PMS 4.5
005: 20180430
020: ^a9780631183532
066: ^aRo.A
082: ^a306.44
100: ^aRonald Wardhaugh
240: ^aAn Introduction to Sociolinguistics
245: ^aAn Introduction to Sociolinguistics
260: ^c1992