Yusuf. (2017). Exploring the use of the Iktisyaf method in teaching Kitab Kuning (Arabic classical textbook): A case study of Puncak Darussalam Pesantren, East Java Indonesia. Kulliyyah of Education, International Islamic University Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Yusuf. Exploring the Use of the Iktisyaf Method in Teaching Kitab Kuning (Arabic Classical Textbook): A Case Study of Puncak Darussalam Pesantren, East Java Indonesia. Kuala Lumpur: Kulliyyah of Education, International Islamic University Malaysia, 2017.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Yusuf. Exploring the Use of the Iktisyaf Method in Teaching Kitab Kuning (Arabic Classical Textbook): A Case Study of Puncak Darussalam Pesantren, East Java Indonesia. Kulliyyah of Education, International Islamic University Malaysia, 2017.