Gaya APA

Group, V. (). Seri Umar Bin Khattab : Umar Bin Khattab Memeluk Islam . : PT. VARIAPOP GROUP.

Gaya MLA

Group, Variapop. "Seri Umar Bin Khattab : Umar Bin Khattab Memeluk Islam". : PT. VARIAPOP GROUP, . Text.