«The Wisdom Development Scale: Further Validity Investigations». International Journal of Aging and Human Development. 68. PMID19711618. doi:10.2190/AG.68.4.b
«"General Intelligence," Objectively Determined and Measured». The American Journal of Psychology. 15. JSTOR1412107. doi:10.2307/1412107
jstor.org
«"General Intelligence," Objectively Determined and Measured». The American Journal of Psychology. 15. JSTOR1412107. doi:10.2307/1412107
nih.gov
ncbi.nlm.nih.gov
«The Wisdom Development Scale: Further Validity Investigations». International Journal of Aging and Human Development. 68. PMID19711618. doi:10.2190/AG.68.4.b