| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2009 | 978-0-9817261-0-6 | Brad Steiger · Sherry Hansen Steiger | Real Angels: Guiding Spirits, Benevolent Beings, and Heavenly Hosts |
| '' | 978-0-9817261-1-3 | Brad Steiger · Sherry Hansen Steiger | Real Angels II: Guardian Spirits, Divine Messengers, and Celestial Teachers |