APA

Joint Committee on Standards for Educational Evaluation, . (1981). Standards for evaluations of educational programs, projects, and materials. New York, N.Y: McGraw-Hill Book Co.

Chicago

Joint Committee on Standards for Educational Evaluation, . 1981. Standards for evaluations of educational programs, projects, and materials. New York, N.Y: McGraw-Hill Book Co.

Harvard

Joint Committee on Standards for Educational Evaluation, . (1981). Standards for evaluations of educational programs, projects, and materials. New York, N.Y: McGraw-Hill Book Co.

MLA

Joint Committee on Standards for Educational Evaluation, . Standards for evaluations of educational programs, projects, and materials. New York, N.Y: McGraw-Hill Book Co. 1981.