Formation : Abu Ameenah Bilal Philips
Source : http://www.islamhouse.com/p/250756
Formation : Salman Bin Fahad al-Awdah
From issues : http://www.islamtoday.net - Islam Today Website
Source : http://www.islamhouse.com/p/1403
Source : http://www.islamhouse.com/p/1245
Formation : Muhammad Bin Abdul Wahhab
From issues : http://www.islambasics.com - Islam Basics Website
Source : http://www.islamhouse.com/p/128600
Formation : Dr. Saleh As-Saleh
From issues : http://understand-islam.net - Understand Islam Website
Source : http://www.islamhouse.com/p/344782