Gaya APA

Keagungan Umar bin Khatab. (1992). : .

Gaya Chicago

Keagungan Umar bin Khatab. . : , 1992. Text.

Gaya MLA

Keagungan Umar bin Khatab. . : , 1992. Text.

Gaya Turabian

Keagungan Umar bin Khatab. : , 1992. Print.