APA-čujuhus (7. p.)
Karoly, L. A., & Bigelow, J. H. (2005). The economics of investing in universal preschool education in California. RAND Corp..
Chicago-čujuhus (17. p.)
Karoly, Lynn A., juo J. H. Bigelow. The Economics of Investing in Universal Preschool Education in California. Santa Monica, CA: RAND Corp., 2005.
MLA-čujuhus (9. p.)
Karoly, Lynn A., juo J. H. Bigelow. The Economics of Investing in Universal Preschool Education in California. RAND Corp., 2005.
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