(2019). 百科知识．2019,no. 13,16,20,23,25.
Chicago Style aipamena百科知识．2019,no. 13,16,20,23,25. 2019.
MLA aipamena百科知识．2019,no. 13,16,20,23,25. 2019.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena
(2019). 百科知识．2019,no. 13,16,20,23,25.
Chicago Style aipamena百科知识．2019,no. 13,16,20,23,25. 2019.
MLA aipamena百科知识．2019,no. 13,16,20,23,25. 2019.