- In Cammino con Elijah, La favola di un viaggio di una vita e la realizzazione di un’Anima.
- In Cammino verso Santiago
- In Case Nobody Told You
- In Coaching und Beratung nicht um Spiritualität betrügen
- In Contact With Other Realms
- In cosa credono i Damanhuriani
- In crescendo
- In das Herz der Wildnis
- In Defense of Magical Thinking: Essays in Defiance of Conformity to Reason
- In der Einheit liegt die Kraft
- In der Quelle des Lebens erwachen
- In der Stille findet das Glück dich leichter
- In der Stille liegt die Kraft
- In Dire Straits
- In Dreams of Tibet
- In Duet With God
- In Every Breath a Prayer
- In Everything, Give Thanks
- In forma con il metodo Macfadden
- In God's Hands, In God's Time
- In Harmonie mit dem Unendlichen: Wie Gedanken Wirklichkeit werden
- In Harmonie sein
- In Her Power
- IN HIM Live Fearlessly
- In Him We Live
- In Hindsight: from Denial to Clarity
- In His Image
- In Identity of Soul
- In Liebe für euch - Christus spricht
- In Love and Light
- In Love with the World
- In meiner Kraft bleiben
- In Memory of the Good Old Days
- In My Past Life I Was Cleopatra
- In My Past Life I Was Cleopatra
- In My Pen (INK)
- In Our Life Time
- In Plain Sight
- In Praise of Great Compassion
- In Praise of Retreat
- In Praise of Wasting Time
- In Principio
- In Pursuit of Love: Love Poems from the Intimate Place
- In Pursuit of Meaning
- In Pursuit of Sanity
- In Quest of the Pearl
- In Resonanz
- In rotta di collisione con Dio
- In Search of Absolute Truth
- In Search of Angels
- In Search Of Corky
- In Search of Dolphin Messages
- In Search of Higher Grounds
- In Search of Lake Monsters
- In Search of Lost Time [volumes 1 to 7] (XVII Classics) (The Greatest Writers of All Time)
- In Search Of My Real Identity
- In Search of My Self
- In Search of the Lost Chord
- In Search of the Luminous Heart
- In Search of the Miraculous
- In Search of the Miraculous
- In Search of the Miraculous: Fragments of an Unknown Teaching
- In Search of the Perfect A*****e
- In seguito al codice da Vinci l'incontro con Dio, una storia vera!
- In Service Of Self
- In Sickness And In Health
- In Spirit
- In The Beginning
- In the Big Thicket on the Trail of the Wild Man
- In The Buddha's Image
- In the Cards
- In the Center of the Fire
- In the Company of Friends
- In the Company of Harry
- In the Devil's Snare
- In the Dust of Shadows
- In The Early Morning Quiet
- In the Eye of the Wild
- In the Heart of a Holler Girl
- In The Hidden Part
- In the House
- In the Lap of the Buddha
- In the Light of the Self: Adi Shankara and the Yoga of Non-dualism
- In the Meantime
- In the Midst and Times of Trouble: Biblical Verses 1
- In the Midst of Heroes
- In the Mind of a Master
- In the Night Sky
- In the palm of Gods Hands
- In the Presence of the Master
- In the Pronaos of the Temple of Wisdom
- In The Realm Of The Eerie & Unexplained
- In the Realms of Mediumship
- In the Sanctuary of the Soul
- In the Shadow of Young Girls in Flower
- In the Shadows of the Master
- In The Shelter Of His Arms
- In the Spirit of Jesus
- In the Steps of the Master
- In the Valley of Achor