APA

Erikson E. H., . (1978). Adulthood. New York: W.W. Norton Company.

Chicago

Erikson Erik H, . 1978. Adulthood. New York: W.W. Norton Company.

Harvard

Erikson E. H., . (1978). Adulthood. New York: W.W. Norton Company.

MLA

Erikson Erik H, . Adulthood. New York: W.W. Norton Company. 1978.