Gaya APA

Mufid, M. (2021). The Inspiration of Two Umars: Kisah Teladan Antikorupsi Umar bin Khattab dan Umar bin Abdul Aziz . Yogyakarta: AR-Ruzz Media.

Gaya MLA

Mufid, Mohamad. "The Inspiration of Two Umars: Kisah Teladan Antikorupsi Umar bin Khattab dan Umar bin Abdul Aziz". Yogyakarta: AR-Ruzz Media, 2021. .