Gaya APA
Adams, Sony. (2016).
The secret of focus (Cet.1).
Yogyakarta:
Psikologi Corner.
Gaya Chicago
Adams, Sony.
The secret of focus.
Cet.1
Yogyakarta:
Psikologi Corner,
2016.
Text.
Gaya MLA
Adams, Sony.
The secret of focus.
Cet.1
Yogyakarta:
Psikologi Corner,
2016.
Text.
Gaya Turabian
Adams, Sony.
The secret of focus.
Cet.1
Yogyakarta:
Psikologi Corner,
2016.
Print.