Gaya APA
Haekal, Muhammad Husain. (2010).
Umar bin Khattab .
Jakarta:
Litera AntarNusa.
Gaya Chicago
Haekal, Muhammad Husain.
Umar bin Khattab.
Jakarta:
Litera AntarNusa,
2010.
Text.
Gaya MLA
Haekal, Muhammad Husain.
Umar bin Khattab.
Jakarta:
Litera AntarNusa,
2010.
Text.
Gaya Turabian
Haekal, Muhammad Husain.
Umar bin Khattab.
Jakarta:
Litera AntarNusa,
2010.
Print.