Gaya APA
Primary english skills 3. (1992).
Jakarta:
Binarupa Aksara.
Gaya Chicago
Primary english skills 3.
.
Jakarta:
Binarupa Aksara,
1992.
Text.
Gaya MLA
Primary english skills 3.
.
Jakarta:
Binarupa Aksara,
1992.
Text.
Gaya Turabian
Primary english skills 3.
Jakarta:
Binarupa Aksara,
1992.
Print.