Anam, O. A. (2005). The extent of voluntary disclosure in the annual reports and firm-specific characteristerics: A study of shari'ah approved companies of Bursa Malaysia. Kulliyyah of Economics and Management Sciences, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Anam, Ousama AbdulRahman. The Extent of Voluntary Disclosure in the Annual Reports and Firm-specific Characteristerics: A Study of Shari'ah Approved Companies of Bursa Malaysia. Gombak, Selangor Darul Ehsan: Kulliyyah of Economics and Management Sciences, International Islamic University Malaysia, 2005.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Anam, Ousama AbdulRahman. The Extent of Voluntary Disclosure in the Annual Reports and Firm-specific Characteristerics: A Study of Shari'ah Approved Companies of Bursa Malaysia. Kulliyyah of Economics and Management Sciences, International Islamic University Malaysia, 2005.