(2020). 百科知识．2020,no.17-20.
Chicago Style aipamena百科知识．2020,no.17-20. 2020.
MLA aipamena百科知识．2020,no.17-20. 2020.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena
(2020). 百科知识．2020,no.17-20.
Chicago Style aipamena百科知识．2020,no.17-20. 2020.
MLA aipamena百科知识．2020,no.17-20. 2020.