Gaya APA
Widiyatmoko, J.
(2008).
Student book series : microsoft excel 2007
(
Ed. 1)
.
Yogyakarta:
Andi.
Gaya MLA
Widiyatmoko, Joko.
"Student book series : microsoft excel 2007".
Ed. 1
Yogyakarta:
Andi,
2008.
Text.