European Investment Bank. (2021). EIB financing and borrowing activities 2020. European Investment Bank.
Chicago Style (17th ed.) ZitazioaEuropean Investment Bank. EIB Financing and Borrowing Activities 2020. European Investment Bank, 2021.
MLA (9th ed.) ZitazioaEuropean Investment Bank. EIB Financing and Borrowing Activities 2020. European Investment Bank, 2021.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.