APA Style
Center, T, I, R. (2016).
TOEFL Killer: cara pasti mendapat skor TOEFL 600 (Cet. 6).
Yogyakarta:
Inspira Publishing.
MLA Style
Center, Tim, Inspira, Research.
"TOEFL Killer: cara pasti mendapat skor TOEFL 600".
Cet. 6
Yogyakarta:
Inspira Publishing,
2016.
Text.