Kamarudin Ahmad. (2012). Mitragyna speciosa: A systematic review of its pharmacology and survey of its use in the Northern States of Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Kamarudin Ahmad. Mitragyna Speciosa: A Systematic Review of Its Pharmacology and Survey of Its Use in the Northern States of Malaysia. 2012.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Kamarudin Ahmad. Mitragyna Speciosa: A Systematic Review of Its Pharmacology and Survey of Its Use in the Northern States of Malaysia. 2012.
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