CRANDELL, T. L., Cradel, C. H., & ZANDEN, J. W. V. (2012). Human development. McGraw-Hill Book Company.
Lua i Stíl Chicago (17ú heag.)CRANDELL, Thomas L., Corinne Haines Cradel, agus James W. Vander ZANDEN. Human Development. McGraw-Hill Book Company, 2012.
Lua MLA (9ú heag.)CRANDELL, Thomas L., et al. Human Development. McGraw-Hill Book Company, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.