APA Style
MUHAMMAD, Q, I.
(2002).
Kebijakan Ekonomi Umar bin Khaththab
(
1)
.
Jakarta:
Pustaka Azam.
MLA Style
MUHAMMAD, QUTH, IBRAHIM.
"Kebijakan Ekonomi Umar bin Khaththab".
1
Jakarta:
Pustaka Azam,
2002.
Text.