(2000). Elementary & Secondary School Enrollment: Fall 1970-2008. U.S. Department of Education.
Citazione stile Chigago Style (17a edizione)Elementary & Secondary School Enrollment: Fall 1970-2008. U.S. Department of Education, 2000.
Citatione MLA (9a ed.)Elementary & Secondary School Enrollment: Fall 1970-2008. U.S. Department of Education, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.