Sivalingam a/l Ramoo. (1999). A Survey of counsellors' duties as perceived by school administrators and school councellors in secondary schools in Perak. International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sivalingam a/l Ramoo. A Survey of Counsellors' Duties as Perceived by School Administrators and School Councellors in Secondary Schools in Perak. Gombak, Selangor: International Islamic University Malaysia, 1999.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Sivalingam a/l Ramoo. A Survey of Counsellors' Duties as Perceived by School Administrators and School Councellors in Secondary Schools in Perak. International Islamic University Malaysia, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.