Gaya APA

..., M, ., [, E, ]. et al (2009). My english workbook 1a : for junior high school students year vii (Cet. 1). Jakarta: Erlangga.

Gaya MLA

..., Mukarto, ..., [, Et.al, ]. et al. "My english workbook 1a : for junior high school students year vii". Cet. 1 Jakarta: Erlangga, 2009. Text.