Gaya APA

Wardiman, A. et al (2008). English in Focus for Grade IX Junior High School (SMP/MTs) . Jakarta: Pusat Perbukuan Departemen Pendidikan Nasional.

Gaya MLA

Wardiman, Artono. et al. "English in Focus for Grade IX Junior High School (SMP/MTs)". Jakarta: Pusat Perbukuan Departemen Pendidikan Nasional, 2008. Text.