Gaya APA
Afifi, J.
(2015).
Kedahsyatan Berfikir Positif, Fokus, & Bertindak Progresif
(
Cet. 1)
.
Yogyakarta:
FlashBooks.
Gaya MLA
Afifi, John.
"Kedahsyatan Berfikir Positif, Fokus, & Bertindak Progresif".
Cet. 1
Yogyakarta:
FlashBooks,
2015.
Book.