Gaya APA
Palapah, S, I, A, &, M, A, O. (2018).
Simple Step to TOEFL From Grammar to The D-Day .
Jakarta:
Buku Kita.
Gaya MLA
Palapah, Santi, Indra, Astuti, &, Maya, Amalia, Oesman.
"Simple Step to TOEFL From Grammar to The D-Day".
Jakarta:
Buku Kita,
2018.
Text.