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