Gaya APA
Programed Learning Aid for Introduction to Business. (1981).
Amerika:
[s.n.].
Gaya Chicago
Programed Learning Aid for Introduction to Business.
.
Amerika:
[s.n.],
1981.
Text.
Gaya MLA
Programed Learning Aid for Introduction to Business.
.
Amerika:
[s.n.],
1981.
Text.
Gaya Turabian
Programed Learning Aid for Introduction to Business.
Amerika:
[s.n.],
1981.
Print.