Ellis, H., & Ellis, H. (1937). Studies in the psychology of sex: By Ellis Havelock. Random.

Ellis, Havelock, and Havelock Ellis. Studies in the Psychology of Sex: By Ellis Havelock. New York: Random, 1937.

Ellis, Havelock, and Havelock Ellis. Studies in the Psychology of Sex: By Ellis Havelock. Random, 1937.