Gaya APA
LOUGHEED, L.
(2008).
IELTS: International English Language System
(
1)
.
Tangerang:
Bina Rupa Aksara Publishing.
Gaya MLA
LOUGHEED, LIN.
"IELTS: International English Language System".
1
Tangerang:
Bina Rupa Aksara Publishing,
2008.
Text.