Author:
Shaykh Ibn Qasim An-Najdī (1392H)
This classic, a reference :  Great volume of books by Shaykh Najdī, he complied the Aqīdah & Methodology of the Scholars of Najd from the time of Shaykh Islam Muhammad ibn Abdul Wahhab up until the time of himself (Shaykh ibn Qasim an-Najdī : 1312-1392H). In 16 volumes.