Gaya APA
Lougheed, L.
(2016).
IELTS Practice Exams (3) = Latihan Soal IELTS (3)
(
Edisi 3)
.
New York:
Barrons.
Gaya MLA
Lougheed, Lin.
"IELTS Practice Exams (3) = Latihan Soal IELTS (3)".
Edisi 3
New York:
Barrons,
2016.
Textbook.