Judul asli : "Maintenance Management Techniques"
No Inv.: 1622-1626/P/Perp/95/5c
Judul asli : "Al-Islamiyun wa Sarabud-Dimuqrathiyah"
Bibliografi : lembar 195-196
Judul asli :"The influence of Islam on medieval Europe"
Bibliografi : hlm. 251-252 No Inv.: 143606-143608/P/Perp/14/3c
No Inv.: 84387-84393/P/Perp/FBS/02/7c
Bibliografi : hlm. 60
Judul asli : "Revolution and the Transformation of Societies"