Klein, G. (2015). What rigor looks like in the classroom. Association for Supervision and Curriculum Development.
Chicago Style (17th ed.) CitationKlein, Greg. What Rigor Looks like in the Classroom. Alexandria, VA: Association for Supervision and Curriculum Development, 2015.
MLA (9th ed.) CitationKlein, Greg. What Rigor Looks like in the Classroom. Association for Supervision and Curriculum Development, 2015.
Warning: These citations may not always be 100% accurate.