Gaya APA
A., F., Widyasmara, T., I. (2016).
Top Master TOEFL : Pursue Your Highest Grammar Score! .
Jakarta:
Grasindo.
Gaya MLA
Fikrie, A.., Widyasmara, Teresa, Iswara.
"Top Master TOEFL : Pursue Your Highest Grammar Score!".
Jakarta:
Grasindo,
2016.
Textbook.