Gaya APA
Astuti, E, M., Lande, S, K. (2016).
Forward an english course for vocational school students grade X .
Jakarta:
Erlangga.
Gaya MLA
Astuti, Eka, Mulya., Lande, Shyla, K.
"Forward an english course for vocational school students grade X".
Jakarta:
Erlangga,
2016.
Text.