Gaya APA

Vyas, P., Sofrina, M. (2009). Kangaroo is My Coach: a book about present perfect progresive tense . Hoboken, NJ: Elex Media Komputindo.

Gaya MLA

Vyas, Preeta., Sofrina, Mariam. "Kangaroo is My Coach: a book about present perfect progresive tense". Hoboken, NJ: Elex Media Komputindo, 2009. Text.