Gaya APA

Wardiman, A., Jahur, M, B. (2008). English in Focus: for Grade VIII Junior High School (SMP/MTs) . Solo: PT Tiga Serangkai.

Gaya MLA

Wardiman, Artono., Jahur, Masduki, B.. "English in Focus: for Grade VIII Junior High School (SMP/MTs)". Solo: PT Tiga Serangkai, 2008. Text.