APA Style
Mansur, Yusuf. (2012).
The Secret of a Happy Life .
Jakarta Timur:
Zikrul Hakim.
Chicago Style
Mansur, Yusuf.
The Secret of a Happy Life.
Jakarta Timur:
Zikrul Hakim,
2012.
Text.
MLA Style
Mansur, Yusuf.
The Secret of a Happy Life.
Jakarta Timur:
Zikrul Hakim,
2012.
Text.
Turabian Style
Mansur, Yusuf.
The Secret of a Happy Life.
Jakarta Timur:
Zikrul Hakim,
2012.
Print.