Young, M. E. (1996). Early child development: Investing in the future. World Bank.
Chicago Style aipamenaYoung, Mary E. Early Child Development: Investing in the Future. Washington, D.C.: World Bank, 1996.
MLA aipamenaYoung, Mary E. Early Child Development: Investing in the Future. World Bank, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.