Gaya APA

Uswatun, Q., Achmad, F. (2008). English for Professional (Cet. 1). Yogyakarta: Golden Books.

Gaya MLA

Uswatun, Qoyyimah., Achmad, Fanani. "English for Professional". Cet. 1 Yogyakarta: Golden Books, 2008. Text.