Akuntansi keuangan menengah II / Hafsah, Pandapotan Ritonga, Henny Zurika Lubis, Farida Khairani Lubis; editor, Sri Rahayu Analisis konstruksi frasa nominal bahasa Mandailing : laporan penelitian / koord. penelitian Siahaan; tenaga ahli, Parlaungan Ritonga, Haris Sutan Lubis Ensiklopedi hukum Islam 2 FIK-IMA/ Editor, Abdul Aziz Dahlan ... [et.al]; transliterator, Ahmad Thib Raya, Cholidi, Yaswirman; penulis, A. Rahman Ritonga ... [et.al] Ensiklopedi hukum Islam 3 IMS-MAJ/ Editor, Abdul Aziz Dahlan ...[et.al]; transliterator, Ahmad Thib Raya, Cholidi, Yaswirman; penulis, A. Rahman Ritonga ...[et.al] Ensiklopedi hukum Islam 4 MAK-PUT/ Abdul Aziz Dahlan ...[et.al]; transliterator, Ahmad Thib Raya, Cholidi, Yaswirman; penulis, A. Rahman Ritonga ...[et.al] Ensiklopedi hukum Islam 5 QAN-TAS/ Editor, Abdul Aziz Dahlan ...[et.al]; transliterator, Ahmad Thib Raya, Cholidi, Yaswirman; penulis, A. Rahman Ritonga ...[et.al]Ensiklopedi hukum Islam 6 TAT-ZIN/ Editor, Abdul Aziz Dahlan ... [et.al]; transliterator, Ahamad Thib Raya, Cholidi, Yaswirman; penulis, A. Rahman Ritonga ...[et.al]Ensiklopedi hukum islam / editor, H. Abdul Aziz Dahlan ... [et al.] ; transliterator, Ahmad Thaib Raya, Cholidi, Yaswirman ; penulis, A. Rahman Ritonga ... [et al.]Pembahasan UUD 1945 / M. Solly LubisMama, jangan lelah mencintaiku! / penulis, Selvy Lucy Febriana Ritonga ; editor, Aprilia Susanti