Gaya APA
TOEFL PREPARATION GUIDE. (1991).
Singapore:
CLIFFS NOTES INCORPORATED.
Gaya Chicago
TOEFL PREPARATION GUIDE.
.
Singapore:
CLIFFS NOTES INCORPORATED,
1991.
Monograf.
Gaya MLA
TOEFL PREPARATION GUIDE.
.
Singapore:
CLIFFS NOTES INCORPORATED,
1991.
Monograf.
Gaya Turabian
TOEFL PREPARATION GUIDE.
Singapore:
CLIFFS NOTES INCORPORATED,
1991.
Monograf.