Gaya APA
Gardner, D, C., Beatty, G, J. (1995).
ACT! 2.0 for Windows : The Visual Learning Guide .
America:
The Gardner Beatty.
Gaya MLA
Gardner, David, C.., Beatty, Grace, Joely.
"ACT! 2.0 for Windows : The Visual Learning Guide".
America:
The Gardner Beatty,
1995.
Umum.