Kitab At-Tawheed is one of the best books on the subject of Tawheed (Islamic Monotheism) and ranks high in authenticity. Till date it has gone through various publications; and had been the means for guidance of the millions of people throughout the world; by taking them out of the darkness of polytheism and error.
Author: Muhammad Bin Abdul Wahhab
Publisher: http://www.islambasics.com - Islam Basics Website
All in all, this book should provide a good overview towards understanding the many misguided views that emanate from varied groups influenced by the Mu'tazilah.
Author: Sajid Abdul Qayyum
Reveiwers: Muhammad AbdulRaoof
Publisher: A website Quran and Sunnah : http://www.qsep.com
The Three Fundamental Principles and the Four Basic Rules of Islam.
Author: Muhammad Bin Abdul Wahhab
Publisher: Daar Al-Watan
Source: http://www.islamhouse.com/p/1333
This is a brief book which explains the meanings and the definitions of the miracle. It also takes a look at some of the scientific facts mentioned in the Quran which modern scientists, Muslim and non-Muslim alike, affirm as true.
Author: Ahmed Deedat
The Nine Conditions of the Testimony of Faith.
Author: Jamaal Zarabozo
Publisher: Al-Basheer Magazine
Source: http://www.islamhouse.com/p/1371
The Tenets of Faith, Creed of Ahlu Alsunnah and Aljamah: This Book Present the Pillars of Eman in a very Simple way.
Author: Muhammad ibn Saleh al-Othaimeen
Translators: Mane' Bin Hammad Al-Juhani
Publisher: http://www.al-hidaayah.co.uk - Al-Hidaayah Publishing and Distribution Website - Books of the office of propagation in Ulayya, Sulaymaniyah and north of Riyadh