APA Style
\'Aal, A, -, T, A, A.
(2009).
The Great Leaders : Kisah Khulafaur Rasyidin
.
Jakarta:
Gema Insani Press.
MLA Style
\'Aal, Ath, -, Thahthawi,, Ahmad, Abdul.
"The Great Leaders : Kisah Khulafaur Rasyidin".
Jakarta:
Gema Insani Press,
2009.
.