(2019). 豐年．2019,v.69,no.5,12.
Chicago Style aipamena豐年．2019,v.69,no.5,12. 2019.
MLA aipamena豐年．2019,v.69,no.5,12. 2019.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena
(2019). 豐年．2019,v.69,no.5,12.
Chicago Style aipamena豐年．2019,v.69,no.5,12. 2019.
MLA aipamena豐年．2019,v.69,no.5,12. 2019.