توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Khairul Shakirin bin Zulkifli. (2018). Malay micro-entrepreneurship in Penang under the Pakatan Rakyat administration: 2008-2015. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Khairul Shakirin bin Zulkifli. Malay Micro-entrepreneurship in Penang Under the Pakatan Rakyat Administration: 2008-2015. Kuala Lumpur: Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2018.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Khairul Shakirin bin Zulkifli. Malay Micro-entrepreneurship in Penang Under the Pakatan Rakyat Administration: 2008-2015. Kulliyyah of Islamic Revealed Knowledge and Human Sciences, International Islamic University Malaysia, 2018.