APA Style
PFS : Profesional File. (1986).
California:
Software Publishing.
Chicago Style
PFS : Profesional File.
.
California:
Software Publishing,
1986.
Text.
MLA Style
PFS : Profesional File.
.
California:
Software Publishing,
1986.
Text.
Turabian Style
PFS : Profesional File.
California:
Software Publishing,
1986.
Print.