Swick, KJ; Williams R (2006). "An Analysis of Bronfenbrenner's Bio-Ecological Perspective for EARLY Childhood Educators: Implications for Working with Families Experiencing Stress". Early Childhood Education Journal. 33 (5): 371–378. doi:10.1007/s10643-006-0078-y. S2CID59427449.
Swick, KJ; Williams R (2006). "An Analysis of Bronfenbrenner's Bio-Ecological Perspective for EARLY Childhood Educators: Implications for Working with Families Experiencing Stress". Early Childhood Education Journal. 33 (5): 371–378. doi:10.1007/s10643-006-0078-y. S2CID59427449.