Gaya APA
Pfaffenberger, B. (1992).
Essential Of Lotus 1-2-3 With Advanced Applications .
Harlow, England:
Harper Collins Pubishers.
Gaya MLA
Pfaffenberger, Brayan.
"Essential Of Lotus 1-2-3 With Advanced Applications".
Harlow, England:
Harper Collins Pubishers,
1992.
Text.