Gaya APA
Learning, I., Hermawan, C, W.
(2009).
CARA GAMPANG BELAJAR TOEFL GRAMMAR 2
.
Yogyakarta:
Andi.
Gaya MLA
Learning, ILT., Hermawan, C., Widyo.
"CARA GAMPANG BELAJAR TOEFL GRAMMAR 2".
Yogyakarta:
Andi,
2009.
Book.