APA Style
GRAHAM, Billy. (2002).
The secret of happiness .
Wheaton:
W Publ..
Chicago Style
GRAHAM, Billy.
The secret of happiness.
Wheaton:
W Publ.,
2002.
Text.
MLA Style
GRAHAM, Billy.
The secret of happiness.
Wheaton:
W Publ.,
2002.
Text.
Turabian Style
GRAHAM, Billy.
The secret of happiness.
Wheaton:
W Publ.,
2002.
Print.