Gaya APA
Introduction to linguistics. (1972).
New York:
[s.n.].
Gaya Chicago
Introduction to linguistics.
.
New York:
[s.n.],
1972.
Text.
Gaya MLA
Introduction to linguistics.
.
New York:
[s.n.],
1972.
Text.
Gaya Turabian
Introduction to linguistics.
New York:
[s.n.],
1972.
Print.