Zein, Z. I. M. (2014). Green products purchasing behaviour in Malaysia: An exploratory study. Kulliyyah of Economics and Management Sciences, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Zein, Zariyah Ibrahim M. Green Products Purchasing Behaviour in Malaysia: An Exploratory Study. Kuala Lumpur: Kulliyyah of Economics and Management Sciences, International Islamic University Malaysia, 2014.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Zein, Zariyah Ibrahim M. Green Products Purchasing Behaviour in Malaysia: An Exploratory Study. Kulliyyah of Economics and Management Sciences, International Islamic University Malaysia, 2014.
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