Joel H., S. (2000). American Education (9th Edn.). McGraw Hill.
Cita Chicago (17th ed.)Joel H., Spring. American Education. 9th Edn. McGraw Hill, 2000.
Cita MLA (9th ed.)Joel H., Spring. American Education. 9th Edn. McGraw Hill, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.