توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Sherina Mohd. Sidik. (2000). The prevalence of depression among the eldery attending Klinik Kesihatan Butterworth from 1st April to 30th September 1999. Universiti Kebangsaan Malaysia.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Sherina Mohd. Sidik. The Prevalence of Depression Among the Eldery Attending Klinik Kesihatan Butterworth from 1st April to 30th September 1999. Kuala Lumpur: Universiti Kebangsaan Malaysia, 2000.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Sherina Mohd. Sidik. The Prevalence of Depression Among the Eldery Attending Klinik Kesihatan Butterworth from 1st April to 30th September 1999. Universiti Kebangsaan Malaysia, 2000.