Gaya APA
Hapka, C.
(2014).
Sofia makes A friend = Sofia Punya Teman Baru
.
Jakarta:
Gramedia Pustaka Utama.
Gaya MLA
Hapka, Catherine.
"Sofia makes A friend = Sofia Punya Teman Baru".
Jakarta:
Gramedia Pustaka Utama,
2014.
Book.