Gaya APA

Prihatini, /, W, K, P, N. (2008). Effective comunication : an integrated course of english for vocational High School . Jakarta: Pusat Perbukuan, Departemen Pendidikan Nasional.

Gaya MLA

Prihatini, /Agus, Widyantoro,, Kartika, Pratiwi,, Nuki. "Effective comunication : an integrated course of english for vocational High School". Jakarta: Pusat Perbukuan, Departemen Pendidikan Nasional, 2008. Electronic Resource.