APA Style
Mandino, Og. (1972).
The greatest secret in the world .
New York:
Bantam Books.
Chicago Style
Mandino, Og.
The greatest secret in the world.
New York:
Bantam Books,
1972.
Text.
MLA Style
Mandino, Og.
The greatest secret in the world.
New York:
Bantam Books,
1972.
Text.
Turabian Style
Mandino, Og.
The greatest secret in the world.
New York:
Bantam Books,
1972.
Print.