Gaya APA
Ang, J, T, &, S.
(2010).
The Excel Counting
(
1)
.
Yogyakarta:
Graha Ilmu.
Gaya MLA
Ang, Josua, Tarigan,, &, Sany.
"The Excel Counting".
1
Yogyakarta:
Graha Ilmu,
2010.
Text.