Gaya APA
Astuti, E, M.
(2006).
English Zone (For Senior High School Students Year XI )
(
1)
.
JAKARTA:
ERLANGGA.
Gaya MLA
Astuti, Eka, Mulya.
"English Zone (For Senior High School Students Year XI )".
1
JAKARTA:
ERLANGGA,
2006.
Text.