Gaya APA
Hasyim, M, W.
(2006).
Secret of heart ( Rahasia Hati )
.
Yogyakarta:
Diva Press.
Gaya MLA
Hasyim, Mustofa, W.
"Secret of heart ( Rahasia Hati )".
Yogyakarta:
Diva Press,
2006.
Monograf.