Gaya APA
Practical English Usage. (1983).
Kupi:
[s.n.].
Gaya Chicago
Practical English Usage.
; 6.
Kupi:
[s.n.],
1983.
Text.
Gaya MLA
Practical English Usage.
; 6.
Kupi:
[s.n.],
1983.
Text.
Gaya Turabian
Practical English Usage.
Kupi:
[s.n.],
1983.
Print.