Gaya APA
Seto, M. (2011).
Positive Thinking vs Positive Attitude: 42 Pikiran & Sikap Super Orang Sukses .
Yogyakarta:
LOCUS.
Gaya MLA
Seto, Mario.
"Positive Thinking vs Positive Attitude: 42 Pikiran & Sikap Super Orang Sukses".
Yogyakarta:
LOCUS,
2011.
Text.