APA (7th ed.) Citation

Erikson, E. H. (1959). Identity and the life cycle: Selected papers. International Universities Press.

Chicago Style (17th ed.) Citation

Erikson, Erik H. Identity and the Life Cycle: Selected Papers. New York: International Universities Press, 1959.

MLA (9th ed.) Citation

Erikson, Erik H. Identity and the Life Cycle: Selected Papers. International Universities Press, 1959.