Gaya APA
Bettger, Frank. (1983).
How I raised Myself from Failure to Success in Selling .
New York:
.
Gaya Chicago
Bettger, Frank.
How I raised Myself from Failure to Success in Selling.
New York:
,
1983.
Text.
Gaya MLA
Bettger, Frank.
How I raised Myself from Failure to Success in Selling.
New York:
,
1983.
Text.
Gaya Turabian
Bettger, Frank.
How I raised Myself from Failure to Success in Selling.
New York:
,
1983.
Print.