Gaya APA
Firth, J. R. (1983).
Core business program computer applications .
New York:
Fact On File Publications.
Gaya Chicago
Firth, J. R.
Core business program computer applications.
New York:
Fact On File Publications,
1983.
Text.
Gaya MLA
Firth, J. R.
Core business program computer applications.
New York:
Fact On File Publications,
1983.
Text.
Gaya Turabian
Firth, J. R.
Core business program computer applications.
New York:
Fact On File Publications,
1983.
Print.