Gaya APA

Wardiman, A. et al (2008). English in Focus for Grade IX Junior High School (SMP/MTs) (Ed.1). Jakarta: Pusat Perbukuan DEPDIKNAS.

Gaya MLA

Wardiman, Artono. et al. "English in Focus for Grade IX Junior High School (SMP/MTs)". Ed.1 Jakarta: Pusat Perbukuan DEPDIKNAS, 2008. E-Book.