Al mawsu'at al hadithiyyah al Sunan al Kubra

by Imam Abi Abdurrahman Ahmad Ibn Shuyb al Nasa'i
Published 2001

Al Wadih fi Usul al Fiqh

by Abi al Wafa' Ali Ibn Aqil Ibn Muhammad Ibn-Aqilal-baghdadi-al-hanbali
Published 1999

Al 'alaqah bayna al 'aliwayyin wa al 'abbasiyyin

by Abdul Aziz Muhammad al Lamaylim
Published 1993

Buhuth muqaranah fi al fiqh al Islami wa usulihi

by Muhammad Fat'hi al Durayni
Published 1994