APA Format
The autocad 2 (tm) drafting package : user guide
. (19..?]). : s.n.,.
MLA Format
.
The autocad 2 (tm) drafting package : user guide
. : s.n.,, 19..?]
Chicago Format
. The autocad 2 (tm) drafting package : user guide. : s.n.,, 19..?].