An introduction to historical linguistics
  MLA
  Crowley, Terry. An Introduction to Historical Linguistics. 3th ed. Auckland: Oxford University Press, 2000.
  APA
  Crowley, T. (2000). An introduction to historical linguistics. 3th ed. Auckland: Oxford University Press.
  Chicago
  Crowley, Terry An Introduction to Historical Linguistics. 3th ed. Auckland: Oxford University Press, 2000.