Wardle, F. (2009). Approaches to early childhood and elementary education. Read pages 143-168. This resource is important because it discusses a massive choice of philosophical and practical approaches to early education by such theorists as Erikson, Bowlby, Freud, Bandura, Piaget, Bronfenbrenner, Gardner, Maslow, and Vygotsky.
Shaughnessy, M. F., & Kleyn, K. (Eds.). (2012). Handbook of early childhood education. Read pages 175-186. This book is important because it discusses the role of an administrator in a highly qualified preschool.
McCormick Center for Early Childhood Leadership at National Louis University. (2017). Stark contrast between early childhood program directors and elementary school principals. This resource is important because it discusses and provides insights on the differences between a Director and a principal.