Nelson, Paul (May 31, 1969). "Records". Rolling Stone. No. 34. San Francisco: Straight Arrow Publishers, Inc. p. 36. Archived from the original on June 1, 2015. Retrieved June 2, 2015.
Nelson, Paul (May 31, 1969). "Records". Rolling Stone. No. 34. San Francisco: Straight Arrow Publishers, Inc. p. 36. Archived from the original on June 1, 2015. Retrieved June 2, 2015.