Gaya APA
Astuti, E, M. (2017).
Forward An English 2 course for Vocational School Students Ggrade XI .
Jakarta:
Erlangga.
Gaya MLA
Astuti, Eka, Mulya.
"Forward An English 2 course for Vocational School Students Ggrade XI".
Jakarta:
Erlangga,
2017.
Text.