Gaya APA
Wardhaugh, Ronald. (2006).
An introduction to sociolinguistics (5th ed).
Massachusetts:
Blackwell.
Gaya Chicago
Wardhaugh, Ronald.
An introduction to sociolinguistics.
5th ed
Massachusetts:
Blackwell,
2006.
Text.
Gaya MLA
Wardhaugh, Ronald.
An introduction to sociolinguistics.
5th ed
Massachusetts:
Blackwell,
2006.
Text.
Gaya Turabian
Wardhaugh, Ronald.
An introduction to sociolinguistics.
5th ed
Massachusetts:
Blackwell,
2006.
Print.