Arifin Tasrif. (1991). A survey of weeds in leguminous cover crops in rubber and oil palm plantations and its plant quarantine aspects. Universiti Kebangsaan Malaysia, Faculty of Life Sciences.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Arifin Tasrif. A Survey of Weeds in Leguminous Cover Crops in Rubber and Oil Palm Plantations and Its Plant Quarantine Aspects. Bangi: Universiti Kebangsaan Malaysia, Faculty of Life Sciences, 1991.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Arifin Tasrif. A Survey of Weeds in Leguminous Cover Crops in Rubber and Oil Palm Plantations and Its Plant Quarantine Aspects. Universiti Kebangsaan Malaysia, Faculty of Life Sciences, 1991.
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