Gaya APA
Aitken, P. et al
(1999).
Microsoft Excel 97 for windows 95 & windows NT
.
Yogyakarta:
Andi.
Gaya MLA
Aitken, Peter. et al.
"Microsoft Excel 97 for windows 95 & windows NT".
Yogyakarta:
Andi,
1999.
.