What is the name of the holy book of Spiritualism?

The holy book of Spiritualism is commonly referred to as "The Spiritualist's Manual" or simply "The Book of Spiritualism." However, a key text in the movement is "The Spirits' Book," written by Allan Kardec, which outlines the principles and beliefs of Spiritualism. This work serves as a foundational guide for many Spiritualists, detailing concepts of the afterlife, communication with spirits, and moral teachings.