Karplus, R. (1968). What is curriculum evaluationn six answers. Science Curriculum Improvement Study.
Chicago-referens (17:e uppl.)Karplus, Robert. What Is Curriculum Evaluationn Six Answers. Berkeley, CA: Science Curriculum Improvement Study, 1968.
MLA-referens (9:e uppl.)Karplus, Robert. What Is Curriculum Evaluationn Six Answers. Science Curriculum Improvement Study, 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.