APA (7th ed.) Citation

Sampson, E. E. (1975). Ego at the threshold. Delacorte Press.

Chicago Style (17th ed.) Citation

Sampson, Edward E. Ego at the Threshold. New York: Delacorte Press, 1975.

MLA (9th ed.) Citation

Sampson, Edward E. Ego at the Threshold. Delacorte Press, 1975.