(2020). 老年博览(上)．2020,no.8-12.
Chicago Style aipamena老年博览(上)．2020,no.8-12. 2020.
MLA aipamena老年博览(上)．2020,no.8-12. 2020.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena
(2020). 老年博览(上)．2020,no.8-12.
Chicago Style aipamena老年博览(上)．2020,no.8-12. 2020.
MLA aipamena老年博览(上)．2020,no.8-12. 2020.