Formation : Muhammad Naasiruddeen al-Albaanee
Source : http://www.islamhouse.com/p/51774
Formation : Abu Ameenah Bilal Philips
Source : http://www.islamhouse.com/p/207472
Formation : Abu Bilal Mustafa Al-Kandi
Reveiwers : Muhammad AbdulRaoof
Source : http://www.islamhouse.com/p/339176
Formation : Muhammad Ali Al-Hashemi
From issues : International Islamic Publishing House
Source : http://www.islamhouse.com/p/185386
Formation : Ahmed Deedat
Source : http://www.islamhouse.com/p/273072