APA Style
Umar ibn Al-khaththab: khalifah penegak keadilan. ().
s.l.:
s.n..
Chicago Style
Umar ibn Al-khaththab: khalifah penegak keadilan.
.
s.l.:
s.n.,
.
Text.
MLA Style
Umar ibn Al-khaththab: khalifah penegak keadilan.
.
s.l.:
s.n.,
.
Text.
Turabian Style
Umar ibn Al-khaththab: khalifah penegak keadilan.
s.l.:
s.n.,
.
Print.