Gaya APA

Roosalina, U, W, &. (2019). English for Elementary School Student Book 1 (Cet 1). Sidoarjo: Masmedia.

Gaya MLA

Roosalina, Utami, Widiati, &. "English for Elementary School Student Book 1". Cet 1 Sidoarjo: Masmedia, 2019. Text.