Association for Supervision and Curriculum Development. (1957). Research for curriculum improvement. ASCD.
Cita Chicago (17th ed.)Association for Supervision and Curriculum Development. Research for Curriculum Improvement. Alexandria, Va: ASCD, 1957.
Cita MLA (9th ed.)Association for Supervision and Curriculum Development. Research for Curriculum Improvement. ASCD, 1957.
Atenció: Aquestes cites poden no estar 100% correctes.