Gaya APA

Poonthuruthil, J. (1994). Toward responsibility. A study of Erik H. Erikson's theory of psychosocial development and Viktor E. Frankl's theory of logotherapy. . Roma: Roma PUL.

Gaya MLA

Poonthuruthil, James. "Toward responsibility. A study of Erik H. Erikson's theory of psychosocial development and Viktor E. Frankl's theory of logotherapy. ". Roma: Roma PUL, 1994. Buku.