Gaya APA

Wardiman, A., Jahur, M, B. (2008). English in Focus: for Grade IX Junior High School (SMP/MTs) (Ed.1). Jakarta: Pusat Perbukuan, Depdikbud.

Gaya MLA

Wardiman, Artono., Jahur, Masduki, B.. "English in Focus: for Grade IX Junior High School (SMP/MTs)". Ed.1 Jakarta: Pusat Perbukuan, Depdikbud, 2008. Text.