APA引文

Hamzah Umar. (2002). Causes of visual impairment among students attending schools for the blind in Kedah, Malaysia. Universiti Kebangsaan Malaysia.

Chicago Style (17th ed.) Citation

Hamzah Umar. Causes of Visual Impairment Among Students Attending Schools for the Blind in Kedah, Malaysia. Kuala Lumpur: Universiti Kebangsaan Malaysia, 2002.

MLA引文

Hamzah Umar. Causes of Visual Impairment Among Students Attending Schools for the Blind in Kedah, Malaysia. Universiti Kebangsaan Malaysia, 2002.