Afroz, R. (2004). Economic Valuation of Air Quality Improvement in Klang Valley: Validity and Reliability of Contingent Valuation and Benefit Transfer Methods.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Afroz, Rafia. Economic Valuation of Air Quality Improvement in Klang Valley: Validity and Reliability of Contingent Valuation and Benefit Transfer Methods. 2004.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Afroz, Rafia. Economic Valuation of Air Quality Improvement in Klang Valley: Validity and Reliability of Contingent Valuation and Benefit Transfer Methods. 2004.
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