Happinomics among Factors of Production using a Principal Component Analysis Approach: A Case Study of Labour and Entrepreneurs’ Subjective Happiness in KwaZulu-Natal, South Africa. Mediterr. J. Soc. Sci. [Internet]. 2014 Mar. 6 [cited 2025 Apr. 11];5(4):99. Available from: https://www.richtmann.org/journal/index.php/mjss/article/view/2198