Bibliography of selected texts:

General books about the Baha'i Faith:

Baha'u'llah and the New Era

by J. E. Esslemont

Writings of Baha'u'llah:

Epistle to the Son of the Wolf

Gleanings from the Writings of Baha'u'llah

The Hidden Words of Baha'u'llah

Kitab-i-Aqdas

Kitab-i-Iqan

The Seven Valleys and the Four Valleys

Prayers and Meditations

Proclamation of Baha'u'llah

Tablets of Baha'u'llah

Baha'i Prayers

Writings of Abdu'l-Baha:

Foundations of World Unity

Memorials of the Faithful (stories and tributes to many early believers and martyrs for the Faith)

Abdu'l-Baha in London

Paris Talks

Promulgation of Universal Peace

Selections from the Writings of Abdu'l-Baha 

Some Answered Questions (many common questions from early believers are clarified)

Tablets of Abdu'l-Baha 

Tablets of the Divine Plan

A Traveler's Narrative

The Will and Testament of Abdu'l-Baha (an important document wherein the Guardianship and successorship of the Faith is laid out)

Baha'i World Faith (only Writings of Abdu'l-Baha)

Baha'i Prayers

Books and letters of Shoghi Effendi, First Guardian of the Baha'i Faith:

God Passes By (a history of the Baha'i Faith)

Advent of Divine Justice

Messages to America

Baha'i Administration

The World Order of Baha'u'llah (includes "The Dispensation of Baha'u'llah", clarifying and detailing the role of
the Guardianship in the Baha'i Faith)