Gaya APA
Nugraheni, Y, R., Khotimah, N.
(2009).
Bisikan Surga
.
Yogyakarta:
Diva Press.
Gaya MLA
Nugraheni, Yani, Rahma., Khotimah, Nurul.
"Bisikan Surga".
Yogyakarta:
Diva Press,
2009.
Book.