Gaya APA
Heartsill, W., Adve, . (2008).
The Miracle of Positif Thinking : Mukjizat Berpikir Positif .
Yogyakarta:
Quills Book Publisher.
Gaya MLA
Heartsill, W.., Adve, .
"The Miracle of Positif Thinking : Mukjizat Berpikir Positif".
Yogyakarta:
Quills Book Publisher,
2008.
Book.