APA (7th ed.) Zitazioa
KASSNER, E. (1993). THE OLDER AMERICANS ACT: SHOULD PARTICIPANTS SHARE IN THE COST OF SERVICES?
Chicago Style (17th ed.) Zitazioa
KASSNER, E. THE OLDER AMERICANS ACT: SHOULD PARTICIPANTS SHARE IN THE COST OF SERVICES? 1993.
MLA (9th ed.) Zitazioa
KASSNER, E. THE OLDER AMERICANS ACT: SHOULD PARTICIPANTS SHARE IN THE COST OF SERVICES? 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.