Gaya APA
Ismanto, H, R., Widayati, J. (2015).
The New TOEIC Official Test Preparation Guide .
Jakarta:
PT. International Test Center.
Gaya MLA
Ismanto, Hafilia, R.., Widayati, Juli.
"The New TOEIC Official Test Preparation Guide".
Jakarta:
PT. International Test Center,
2015.
Text.