APA Format
Hahn, Harley. (1986).
Using your IBM PC AT / Harley Hahn
. : Computer Book Centre,.
MLA Format
Hahn, Harley.
Using your IBM PC AT / Harley Hahn
. : Computer Book Centre,, 1986
Chicago Format
Hahn, Harley. Using your IBM PC AT / Harley Hahn. : Computer Book Centre,, 1986.