Gaya APA
Astutiningrum, R. (2016).
Abu bakar Ash-Shiddiq 'Yang Membenarkan' : Seri Khulafaur Rasyidin 1 .
Jakarta:
Gema Insani.
Gaya MLA
Astutiningrum, Ririn.
"Abu bakar Ash-Shiddiq 'Yang Membenarkan' : Seri Khulafaur Rasyidin 1".
Jakarta:
Gema Insani,
2016.
Text.