Rao (1978), pp. 41–42. Rao, K.R. (1978). "Psi: Its Place in Nature". Journal of Parapsychology. 42 (4): 276–303. Archived from the original on September 4, 2023. Retrieved September 5, 2023.
Rao (1978), pp. 41–42. Rao, K.R. (1978). "Psi: Its Place in Nature". Journal of Parapsychology. 42 (4): 276–303. Archived from the original on September 4, 2023. Retrieved September 5, 2023.