(2019). 商界．2019,no.2-3,5,7,11.
Chicago Style aipamena商界．2019,no.2-3,5,7,11. 2019.
MLA aipamena商界．2019,no.2-3,5,7,11. 2019.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena
(2019). 商界．2019,no.2-3,5,7,11.
Chicago Style aipamena商界．2019,no.2-3,5,7,11. 2019.
MLA aipamena商界．2019,no.2-3,5,7,11. 2019.