Gaya APA

astuti, E, M., lade, S, K. (2018). Forward an english : course for vocational school student grade XII (-). Jakarta: Erlangga.

Gaya MLA

astuti, Eka, Mulya., lade, Shyla, K.. "Forward an english : course for vocational school student grade XII". - Jakarta: Erlangga, 2018. Text.