توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Ahmad Hafiz Zulkifly. (2000). The experience of total knee arthroplasty in Hospital Kuala Lumpur and Universiti Kebangsaan Malaysia: January 1986 to December 1997. Universiti Kebangsaan Malaysia.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Ahmad Hafiz Zulkifly. The Experience of Total Knee Arthroplasty in Hospital Kuala Lumpur and Universiti Kebangsaan Malaysia: January 1986 to December 1997. Kuala Lumpur: Universiti Kebangsaan Malaysia, 2000.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Ahmad Hafiz Zulkifly. The Experience of Total Knee Arthroplasty in Hospital Kuala Lumpur and Universiti Kebangsaan Malaysia: January 1986 to December 1997. Universiti Kebangsaan Malaysia, 2000.