APA (7th ed.) Zitazioa
ABLER, R., & FRETZ, B. (1988). SELF-EFFICACY AND COMPETENCE IN INDEPENDENT LIVING AMONG OLDEST OLD PERSONS.
Chicago Style (17th ed.) Zitazioa
ABLER, R.M, eta B.R FRETZ. SELF-EFFICACY AND COMPETENCE IN INDEPENDENT LIVING AMONG OLDEST OLD PERSONS. 1988.
MLA (9th ed.) Zitazioa
ABLER, R.M, eta B.R FRETZ. SELF-EFFICACY AND COMPETENCE IN INDEPENDENT LIVING AMONG OLDEST OLD PERSONS. 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.