Gaya APA

Petersen, J, J, C, ;, A, C. (1984). Adolescence and youth: psychological development in a changing world (ed. 3). London: Harper Paperbacks.

Gaya MLA

Petersen, John, Janeway, Conger, ;, Anne, C.. "Adolescence and youth: psychological development in a changing world". ed. 3 London: Harper Paperbacks, 1984. Text.