APA

United States, . (1990). Progress of education in the United States of America. Washington: U.S. Dept. of Education.

Chicago

United States, . 1990. Progress of education in the United States of America. Washington: U.S. Dept. of Education.

Harvard

United States, . (1990). Progress of education in the United States of America. Washington: U.S. Dept. of Education.

MLA

United States, . Progress of education in the United States of America. Washington: U.S. Dept. of Education. 1990.