APA (7th ed.) Citation

Haddad, W. D. (1978). Educational effects of class size. World Bank.

Chicago Style (17th ed.) Citation

Haddad, Wadi D. Educational Effects of Class Size. Washington: World Bank, 1978.

MLA (9th ed.) Citation

Haddad, Wadi D. Educational Effects of Class Size. World Bank, 1978.