Zegarra, Alejandro, y Corina Negru. 2006. «A MODEL OF THE MODERATING EFFECTS OF PRIOR KNOWLEDGE, LEVEL OF EDUCATION, AND INCOME LEVEL ON THE USE OF EXTRINSIC QUALITY CUES ON CONSUMERS’ QUALITY ASSESSMENTS». Revista Investigación &Amp; Desarrollo 1 (5). https://www.upb.edu/revista-investigacion-desarrollo/index.php/id/article/view/113.