This is a supplement to the self-study course in miracles, which includes songs and prayers and psychotherapy. The course introduces miracles as naturally occurring expressions of love, and although Christian in language, it is a perennial philosophy, presented in a way which is meaningful for present times.
Books can be attributed to "Unknown" when the author or editor (as applicable) is not known and cannot be discovered. If at all possible, list at least one actual author or editor for a book instead of using "Unknown".
Books whose authorship is purposefully withheld should be attributed instead to Anonymous.