APA Style
Software directory : keyword index & program infor. (1988).
:
Texas : IBM.
Chicago Style
Software directory : keyword index & program infor.
.
:
Texas : IBM,
1988.
.
MLA Style
Software directory : keyword index & program infor.
.
:
Texas : IBM,
1988.
.
Turabian Style
Software directory : keyword index & program infor.
:
Texas : IBM,
1988.
.