APA (7th ed.) Citation

Erikson, E. H., & Erikson, J. M. (1997). The life cycle completed (Extended version.). Norton.

Chicago Style (17th ed.) Citation

Erikson, Erik H., and Joan M. Erikson. The Life Cycle Completed. Extended version. New York u.a: Norton, 1997.

MLA (9th ed.) Citation

Erikson, Erik H., and Joan M. Erikson. The Life Cycle Completed. Extended version. Norton, 1997.