Formation : Zakir Naik
Source : http://www.islamhouse.com/p/51900
Formation : Sayid Sabiq
Source : http://www.islamhouse.com/p/1395
Source : http://www.islamhouse.com/p/318422
From issues : http://www.rasoulallah.net - Website of Rasoulullah (peace be upon him)
Source : http://www.islamhouse.com/p/329737
Formation : Aadil ibn Ali ibn Ahmad Al-Fareedaan
Translators : Kessai El-Karim
From issues : Islamic Propagation Office in Rabwah
Source : http://www.islamhouse.com/p/51852