"The Ecology of Human Development and Education" delivered as part of the Otis Lectures in Religion, https://s3.console.aws.amazon.com/s3/object/gebbie.archives?region=us-east-1&prefix=Otis_Lecture_EWGordon1_a.mp3. Marion B. Gebbie Archives and Special Collections. https://wheatoncollege.as.atlas-sys.com/repositories/2/digital_objects/1458 Accessed May 11, 2024.