Gaya APA
Understanding and using english grammar. (1989).
New Mexico:
[s.n.].
Gaya Chicago
Understanding and using english grammar.
Ed. 2.
New Mexico:
[s.n.],
1989.
Text.
Gaya MLA
Understanding and using english grammar.
Ed. 2.
New Mexico:
[s.n.],
1989.
Text.
Gaya Turabian
Understanding and using english grammar.
New Mexico:
[s.n.],
1989.
Print.