Bibliografi : hlm. 149-151
Judul asli : "Al-taubat Ila Allah"
No Inv.: 116672-116675/S/Perp/09/4c
Bibliografi : hlm. 171-179
Bibliografi : hlm. 131-136
No Inv.: 676-695/Perp/89/20c
No Inv.: 3167-3176/P/Perp/97/10c
No Inv.: 1272-1281/P/Perp/97/10c
No Inv.: 114782/S/Perp/08/1c~140629/SM/Perp/14/1c~140567/SM/Perp/14/1c
Orasi Ilmiah Fakultas Pertanian IPB