Παραπομπή σε μορφή APA (7η εκδ.)
ebrary, Inc, & Karoly, L. A. (1998). Investing in our children: What we know and don't know about the costs and benefits of early childhood interventions. Rand.
Παραπομπή σε μορφή Chicago (17η εκδ.)
ebrary, Inc, και Lynn A. Karoly. Investing in Our Children: What We Know and Don't Know About the Costs and Benefits of Early Childhood Interventions. Santa Monica, CA: Rand, 1998.
Παραπομπή σε μορφή MLA (9th εκδ.)
ebrary, Inc, και Lynn A. Karoly. Investing in Our Children: What We Know and Don't Know About the Costs and Benefits of Early Childhood Interventions. Rand, 1998.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.