Cita APA (7th ed.)
Jacobs, H. H. Curriculum 21: Essential Education for a Changing World. Association for Supervision and Curriculum Development.
Cita Chicago (17th ed.)
Jacobs, Heidi Hayes. Curriculum 21: Essential Education for a Changing World. Alexandria, EUA: Association for Supervision and Curriculum Development.
Cita MLA (9th ed.)
Jacobs, Heidi Hayes. Curriculum 21: Essential Education for a Changing World. Association for Supervision and Curriculum Development.
Atenció: Aquestes cites poden no estar 100% correctes.