APA ציטוט

Erikson, E. H., & Erikson, J. M. (1986). Vital involvement in old age. New York: Norton.

Trích dẫn kiểu Chicago

Erikson, Erik H., và Joan M. Erikson. Vital Involvement in Old Age. New York: Norton, 1986.

ציטוט MLA

Erikson, Erik H., và Joan M. Erikson. Vital Involvement in Old Age. New York: Norton, 1986.

אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.