National Research Council (U.S.). Center for Science, Mathematics, and Engineering Education, International Technology Education Association (ITEA) Standards Review Commitee, & ebrary, Inc. (1999). Report on draft 4 of the standards: October 28, 1999. National Academy Press.
Chicago-viite (17. p.)National Research Council (U.S.). Center for Science, Mathematics, and Engineering Education, International Technology Education Association (ITEA) Standards Review Commitee, ja Inc ebrary. Report on Draft 4 of the Standards: October 28, 1999. Washington, D.C.: National Academy Press, 1999.
MLA-viite (9. p.)National Research Council (U.S.). Center for Science, Mathematics, and Engineering Education, International Technology Education Association (ITEA) Standards Review Commitee, ja Inc ebrary. Report on Draft 4 of the Standards: October 28, 1999. National Academy Press, 1999.