(2007). Project on Human Development in Chicago Neighborhoods (PHDCN) Addendum (Primary Caregiver), Wave 3, 2000-2002 / Felton J. Earls, Jeanne Brooks-Gunn, Stephen W. Raudenbush, Robert J. Sampson. [electronic resource].
Παραπομπή σε μορφή Chicago (17η εκδ.)Project on Human Development in Chicago Neighborhoods (PHDCN) Addendum (Primary Caregiver), Wave 3, 2000-2002 / Felton J. Earls, Jeanne Brooks-Gunn, Stephen W. Raudenbush, Robert J. Sampson. [electronic Resource]. 2007.
Παραπομπή σε μορφή MLA (9th εκδ.)Project on Human Development in Chicago Neighborhoods (PHDCN) Addendum (Primary Caregiver), Wave 3, 2000-2002 / Felton J. Earls, Jeanne Brooks-Gunn, Stephen W. Raudenbush, Robert J. Sampson. [electronic Resource]. 2007.
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