Gaya APA
Astuti, E, M. et al (2017).
Mandiri practise your english competence for vocational school grade XI : kurikulum 2013 .
Jakarta:
Erlangga.
Gaya MLA
Astuti, Eka, Mulya. et al.
"Mandiri practise your english competence for vocational school grade XI : kurikulum 2013".
Jakarta:
Erlangga,
2017.
Text.