APA (7th ed.) Citation

Engku Ahmad Zaki Engku Alwi. (2008). Apa itu Islam. PTS ISlamika.

Chicago Style (17th ed.) Citation

Engku Ahmad Zaki Engku Alwi. Apa Itu Islam. Selangor: PTS ISlamika, 2008.

MLA (8th ed.) Citation

Engku Ahmad Zaki Engku Alwi. Apa Itu Islam. PTS ISlamika, 2008.

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