Gaya APA
Khiaratullah,Abdulkarim, .
(2011).
Malaikat-Malaikat Penolong
.
Yogyakarta:
Diva Press.
Gaya MLA
Khiaratullah,Abdulkarim, .
"Malaikat-Malaikat Penolong".
Yogyakarta:
Diva Press,
2011.
Text.