Gaya APA
Astuti, E, M.
(2010).
English Zona "for Senior High School Students Year XI"
.
Jakarta:
Penerbit Erlangga.
Gaya MLA
Astuti, Eka, Mulya.
"English Zona "for Senior High School Students Year XI"".
Jakarta:
Penerbit Erlangga,
2010.
Text.