Siregar, L. S. B. (2018). Exploring instructional strategies used by Islamic education teachers in akhlaq building among students in an Islamic private secondary school: A case study in selected secondary school in Medan. Kulliyyah of Education, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Siregar, Linda Sari Bulan. Exploring Instructional Strategies Used by Islamic Education Teachers in Akhlaq Building Among Students in an Islamic Private Secondary School: A Case Study in Selected Secondary School in Medan. Kuala Lumpur: Kulliyyah of Education, International Islamic University Malaysia, 2018.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Siregar, Linda Sari Bulan. Exploring Instructional Strategies Used by Islamic Education Teachers in Akhlaq Building Among Students in an Islamic Private Secondary School: A Case Study in Selected Secondary School in Medan. Kulliyyah of Education, International Islamic University Malaysia, 2018.