Gaya APA
Sugeng, B., Zaimah, N.
(2009).
Contextual English 1for grade X of senir high schools
.
Solo:
Tiga Serangkai.
Gaya MLA
Sugeng, Bambang., Zaimah, Noor.
"Contextual English 1for grade X of senir high schools".
Solo:
Tiga Serangkai,
2009.
Text.