FRANKL VIKTOR E. (2008). MAN'S SEARCH FOR MEANING. RIDER.
Chicago Style aipamenaFRANKL VIKTOR E. MAN'S SEARCH FOR MEANING. GERMAN: RIDER, 2008.
MLA aipamenaFRANKL VIKTOR E. MAN'S SEARCH FOR MEANING. RIDER, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.