Gaya APA
Practical english grammar. (2006).
New England:
[s.n.].
Gaya Chicago
Practical english grammar.
cet. 2.
New England:
[s.n.],
2006.
Text.
Gaya MLA
Practical english grammar.
cet. 2.
New England:
[s.n.],
2006.
Text.
Gaya Turabian
Practical english grammar.
New England:
[s.n.],
2006.
Print.