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Dominguez, Ivo (2008) Spirit Speak: Knowing and understanding spirit guides, ancestors, ghosts, angels, and the divine. Franklin Lakes, NJ: New Page Books (a division of Career Press): Franklin Lakes, NJ.

Grimassi, Raven (2016) Communing with the Ancestors: Your spirit guides, bloodline allies, and the cycle of reincarnation. Red Wheel/Weiser: Newburyport, MA.

Hunter, Devin (2017) The Witches Book of Spirits. Llewellyn Publications: Woodbury, MN.

Penczak, Christopher (2002) Spirit Allies: Meet your team from the other side. Red Wheel/Weiser: Newburyport, MA.

Penczak, Christopher (2013) The Mighty Dead. Salem, NH: Copper Cauldron Publishing: Salem, NH.