Vaca-Acosta, R. “Corporate Social Responsibility in Spanish Hotel Chains: Determinants of Its Level of Development and Consequences: Supervisors: Dr. Alfonso Vargas-Sánchez. Institution Awarding the Ph. D. Degree: University of Huelva, Spain. Date of Defence: 22/03/2012”. European Journal of Tourism Research, vol. 5, no. 2, Oct. 2012, pp. 191-5, doi:10.54055/ejtr.v5i2.111.