A very useful article shows the pure Islamic belief of monotheism. It briefly mentions that Allah alone is worthy of worship, He is worshipped directly and Allah is not like his creation nor his creation is like him.
Author: Abdur-Rahman Demashqeyyah
Reveiwers: Muhammad AbdulRaoof
Publisher: An Islamic centre of Qatar www.fanar.gov.qa
A beautiful book for non-Muslims which takes a look at the criteria used to find the true religion of God.
Author: Abu Ameenah Bilal Philips
Reveiwers: Ahmad Bolter - Mueed AbdulSalam Abu Hashim - Abdur-Rahman Murad - Khalid Al-Ahmadi - Mahmood Hasan - Dawood Fateh - Ahmad Bolter
Publisher: Islamic Propagation Office in Rabwah
A description of Death, the Life of the Grave, and the Day of Judgment.
Publisher: Islamic Propagation Office in Rabwah
Source: http://www.islamhouse.com/p/1229
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
Discover Islam: A brief book that guides a person towards Islam, Islam is the religion and way of life of about one Fifth of the world's population. Muslims are of diverse nationalities, cultures and races, but their Religion teaches that all humanity is essentially equal. It guides them to the Straight Path.
Author: Mustafa Malaikah
Reveiwers: Muhammad AbdulRaoof
Publisher: A website Islamic Library www.islamicbook.ws
Concept of God in Major Religions.
Author: Zakir Naik