Gaya APA
Lougheed, D, L. ().
IELTS : International English Language Testing System (2).
Tangerang Selatan:
Binarupa Aksara.
Gaya MLA
Lougheed, Dr., Lin.
"IELTS : International English Language Testing System".
2
Tangerang Selatan:
Binarupa Aksara,
.
Text.