1. Happiness, health, and religiosity: Significant relations
2. Testing for stress and happiness: The role of social and cognitive factors;Argyle,1995
3. Sociocultural Integration and Psychological Adaptation of Foreign Immigrants in the Basque Country;Basabe,2004
4. I and Thou;Buber,1970
5. Consumer Confidence Indexhttp://www.cis.es/cis/export/sites/default/-Archivos/Marginales/3300_3319/3319/es3319mar.pdf