Books by William G. Roll
Theory and Experiment in Psychical Research (Perspectives in psychical research)
Research in Parapsychology 1984
Research in Parapsychology 1979
Research in Parapsychology 1978
Research in Parapsychology 1977
Research in Parapsychology 1976
Research in Parapsychology, 1974
Research in Parapsychology Nineteen Seventy-Three
Research in Parapsychology, 19
Research in Parapsychology, 1972