APA (7th ed.) Zitazioa
Schalock, R. L. (1990). Quality of life: Perspectives and issues. American Association on Mental Retardation.
Chicago Style (17th ed.) Zitazioa
Schalock, Robert L. Quality of Life: Perspectives and Issues. Washington, DC: American Association on Mental Retardation, 1990.
MLA (9th ed.) Zitazioa
Schalock, Robert L. Quality of Life: Perspectives and Issues. American Association on Mental Retardation, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.