APA (7th ed.) Zitazioa
Torkildsen, G. (1999). Leisure and recreation management (4th ed.). E & FN Spon.
Chicago Style (17th ed.) Zitazioa
Torkildsen, George. Leisure and Recreation Management. 4th ed. London ; New York: E & FN Spon, 1999.
MLA (9th ed.) Zitazioa
Torkildsen, George. Leisure and Recreation Management. 4th ed. E & FN Spon, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.