Gaya APA
Firdaus, Y, S. (2000).
Keajaiban Shalat Istikharah (The Miracle of Istikharah Prayer) .
Jakarta:
Bintang Indonesia.
Gaya MLA
Firdaus, Yeni, S..
"Keajaiban Shalat Istikharah (The Miracle of Istikharah Prayer)".
Jakarta:
Bintang Indonesia,
2000.
Art Original.