Gaya APA
Introduction to sociolinguistics. (2011).
Mesir:
[s.n.].
Gaya Chicago
Introduction to sociolinguistics.
.
Mesir:
[s.n.],
2011.
Text.
Gaya MLA
Introduction to sociolinguistics.
.
Mesir:
[s.n.],
2011.
Text.
Gaya Turabian
Introduction to sociolinguistics.
Mesir:
[s.n.],
2011.
Print.