APA Format
36014; Masduki B. Jahur ; M. Sukirman Djusma. (2008). English in focus 1: for grade VII Junior High School (SMP/ MTs). Jakarta : Pusat Perbukuan, Departemen Pendidikan Nasional
MLA Format
36014; Masduki B. Jahur ; M. Sukirman Djusma. English in focus 1: for grade VII Junior High School (SMP/ MTs). Jakarta : Pusat Perbukuan, Departemen Pendidikan Nasional, 2008
Chicago Format
36014; Masduki B. Jahur ; M. Sukirman Djusma. English in focus 1: for grade VII Junior High School (SMP/ MTs). Jakarta : Pusat Perbukuan, Departemen Pendidikan Nasional, 2008
Australian/Harvard Format
36014; Masduki B. Jahur ; M. Sukirman Djusma. 2008. English in focus 1: for grade VII Junior High School (SMP/ MTs). Pusat Perbukuan, Departemen Pendidikan Nasional Jakarta