APA (7th ed.) Citation

Zulkarnain Abdurrahman & Ibnor Azli Ibrahim. (2004). Umar Ibn al-Khattab: Seorang khalifah mujtahid. Universiti Kebangsaan Malaysia.

Chicago Style (17th ed.) Citation

Zulkarnain Abdurrahman and Ibnor Azli Ibrahim. Umar Ibn Al-Khattab: Seorang Khalifah Mujtahid. Universiti Kebangsaan Malaysia, 2004.

MLA (8th ed.) Citation

Zulkarnain Abdurrahman and Ibnor Azli Ibrahim. Umar Ibn Al-Khattab: Seorang Khalifah Mujtahid. Universiti Kebangsaan Malaysia, 2004.

Warning: These citations may not always be 100% accurate.