Lawrence J. Schweinhart, PhD
High/Scope Educational Research Foundation, USA
December 2012, Rev. ed.
Sharon Lynn Kagan, EdD, Kristie Kauerz, MA
Teachers College, Columbia University, USA
December 2012, 2nd ed.
Paul Leseman, PhD
Utrecht University, Netherlands
Edward Melhuish, PhD, Jacqueline Barnes, PhD
Department of Education, University of Oxford, United Kingdom
June 2021, Rev. ed.
Jane Bertrand, M.Ed.
Margaret and Wallace McCain Family Foundation, Canada