Judul asli : "Al-taubat Ila Allah"
No Inv.: 5399-5408/P/Perp/97/10c~109964/S/Perp/07/1c~136732-136736/P/Perp/14/5c
Judul asli : "Advice to a Young Scientist"
No Inv.: 722-728/S/Perp/98/7c
No Inv.: 1543/S/Perp/91/1c~2777-2778/P/Perp/91/2c~5214-5218/P/Perp/97/5c~834/S/Perp/98/1c
Tersedia Bibliografi.
Bibliografi : hlm. 203-213
Bibliografi : hlm. 226
Bibliografi : hlm. 194-202
Bibliografi : hlm. 247-250