Gaya APA

Five, T, O. (2005). Improving Skill in English: For University Student / Team of Five (Ed. 1, Cet. 1). : Prenada media.

Gaya MLA

Five, Team, Of. "Improving Skill in English: For University Student / Team of Five". Ed. 1, Cet. 1 : Prenada media, 2005. Referensi.