World bank. (1999). Entering the 21st Century: World development report 1999/2000. University press.
Chicago Style aipamenaWorld bank. Entering the 21st Century: World Development Report 1999/2000. Oxford: University press, 1999.
MLA aipamenaWorld bank. Entering the 21st Century: World Development Report 1999/2000. University press, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.