APA (7th ed.) Zitazioa
COTTEN, P., & SPIRRISON, C. (1988). DEVELOPMENT OF SERVICES FOR ELDERLY PERSONS WITH MENTAL RETARDATION IN RURAL STATE.
Chicago Style (17th ed.) Zitazioa
COTTEN, P.D, eta C.L SPIRRISON. DEVELOPMENT OF SERVICES FOR ELDERLY PERSONS WITH MENTAL RETARDATION IN RURAL STATE. 1988.
MLA (9th ed.) Zitazioa
COTTEN, P.D, eta C.L SPIRRISON. DEVELOPMENT OF SERVICES FOR ELDERLY PERSONS WITH MENTAL RETARDATION IN RURAL STATE. 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.