Gaya APA
Personality Development For Business. (1973).
Amerika:
South-Western College Publishing.
Gaya Chicago
Personality Development For Business.
Ed. 4.
Amerika:
South-Western College Publishing,
1973.
.
Gaya MLA
Personality Development For Business.
Ed. 4.
Amerika:
South-Western College Publishing,
1973.
.
Gaya Turabian
Personality Development For Business.
Amerika:
South-Western College Publishing,
1973.
.