Gaya APA
Programmed learning aid for introduction to bussiness. (1981).
Illinois:
[s.n.].
Gaya Chicago
Programmed learning aid for introduction to bussiness.
.
Illinois:
[s.n.],
1981.
Text.
Gaya MLA
Programmed learning aid for introduction to bussiness.
.
Illinois:
[s.n.],
1981.
Text.
Gaya Turabian
Programmed learning aid for introduction to bussiness.
Illinois:
[s.n.],
1981.
Print.