APA (7th ed.) Citation

Abdul Rahman Rukaini. (1989). Warisan Islam: Khalifah Umar. DBP.

Chicago Style (17th ed.) Citation

Abdul Rahman Rukaini. Warisan Islam: Khalifah Umar. Kuala Lumpur: DBP, 1989.

MLA (9th ed.) Citation

Abdul Rahman Rukaini. Warisan Islam: Khalifah Umar. DBP, 1989.

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