APA Style
Shepherd, P. (2018).
The Positive Approach: Manfaat Berpikir & Bersikap Positif (Cet. 1).
Yogyakarta:
Bright Publisher.
MLA Style
Shepherd, Peter.
"The Positive Approach: Manfaat Berpikir & Bersikap Positif".
Cet. 1
Yogyakarta:
Bright Publisher,
2018.
Text.