Gaya APA
The Simple Way To Happiness. (2017).
yogyakarta:
Psikologi Corner.
Gaya Chicago
The Simple Way To Happiness.
cet. 1.
yogyakarta:
Psikologi Corner,
2017.
Text.
Gaya MLA
The Simple Way To Happiness.
cet. 1.
yogyakarta:
Psikologi Corner,
2017.
Text.
Gaya Turabian
The Simple Way To Happiness.
yogyakarta:
Psikologi Corner,
2017.
Print.