APA Style
PC Tools HARD Disk Backup. (1989).
-:
Central Point Software.
Chicago Style
PC Tools HARD Disk Backup.
.
-:
Central Point Software,
1989.
Text.
MLA Style
PC Tools HARD Disk Backup.
.
-:
Central Point Software,
1989.
Text.
Turabian Style
PC Tools HARD Disk Backup.
-:
Central Point Software,
1989.
Print.