Gaya APA

Doddy, A. (2008). Developing english competencies 3: for Senior High School (SMA/MA) grade XII of natural and sience programmes . Jakarta: Pusat Perbukuan Departemen Pendidikan Nasional.

Gaya MLA

Doddy, Ahmad. "Developing english competencies 3: for Senior High School (SMA/MA) grade XII of natural and sience programmes". Jakarta: Pusat Perbukuan Departemen Pendidikan Nasional, 2008. Text.