Gaya APA

..., M, ., [, E, ]. et al (2015). English on sky 1 smp book vii for junior high school students year vii (Cet. 1). Jakarta: Erlangga.

Gaya MLA

..., Mukarto, ..., [, Et.al, ]. et al. "English on sky 1 smp book vii for junior high school students year vii". Cet. 1 Jakarta: Erlangga, 2015. Text.