APA (7th ed.) Zitazioa
(1980). Recreation and leisure: Issues in an era of change. Venture Publishing.
Chicago Style (17th ed.) Zitazioa
Recreation and Leisure: Issues in an Era of Change. Pennsylvania: Venture Publishing, 1980.
MLA (9th ed.) Zitazioa
Recreation and Leisure: Issues in an Era of Change. Venture Publishing, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.