Gaya APA
Wardhaugh, Ronald. (1997).
sociolinguistics (Ed. 3).
Great Britain:
Blackwell.
Gaya Chicago
Wardhaugh, Ronald.
sociolinguistics.
Ed. 3
Great Britain:
Blackwell,
1997.
Text.
Gaya MLA
Wardhaugh, Ronald.
sociolinguistics.
Ed. 3
Great Britain:
Blackwell,
1997.
Text.
Gaya Turabian
Wardhaugh, Ronald.
sociolinguistics.
Ed. 3
Great Britain:
Blackwell,
1997.
Print.