Gaya APA
let's write english. (1980).
New York:
[s.n.].
Gaya Chicago
let's write english.
Ed.revisi.
New York:
[s.n.],
1980.
Text.
Gaya MLA
let's write english.
Ed.revisi.
New York:
[s.n.],
1980.
Text.
Gaya Turabian
let's write english.
New York:
[s.n.],
1980.
Print.