Gaya APA

M.Pd, A, W. (2008). Effective Communication An Integrated Course of English fo Vocational High School Elementary Level (I). Jakarta: Aneka Ilmu.

Gaya MLA

M.Pd, Agus, Widyantoro,. "Effective Communication An Integrated Course of English fo Vocational High School Elementary Level". I Jakarta: Aneka Ilmu, 2008. .