APA aipamena

Weale, R. A. (2010). Youth prolonged old age postponed.

Chicago Style aipamena

Weale, Robert; Author. Youth Prolonged Old Age Postponed. London, Imperial College Press, 2010.

MLA aipamena

Weale, Robert; Author. Youth Prolonged Old Age Postponed. 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.