Gaya APA

Doddy, A., ahmad, . (2008). Developing English Competencies 2 For Senior High School SMA/MA Grade XI of Language Programme . Jakarta: Pusat Perbukuan..

Gaya MLA

Doddy, Achmad., ahmad, . "Developing English Competencies 2 For Senior High School SMA/MA Grade XI of Language Programme". Jakarta: Pusat Perbukuan., 2008. Text.