Schumacher, E. (1977). A guide for the perplexed. Jonathan Cape.
Chicago Style aipamenaSchumacher, E. A Guide for the Perplexed. London: Jonathan Cape, 1977.
MLA aipamenaSchumacher, E. A Guide for the Perplexed. Jonathan Cape, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.