Freud, S., Freud, A., Strachey, J., & Tyson, A. (2001). Beyond the pleasure principle. Group psychology and other works: (1920 - 1922). Vintage.

Freud, Sigmund, Anna Freud, James Strachey, and Alan Tyson. Beyond the Pleasure Principle. Group Psychology and Other Works: (1920 - 1922). London: Vintage, 2001.

Freud, Sigmund, et al. Beyond the Pleasure Principle. Group Psychology and Other Works: (1920 - 1922). Vintage, 2001.