Ferrer, Albert. “Ethics Within a Spiritual Metaphysical World View towards Integral Value-Based Education European Educationists: Steiner and Montessori”. JOURNAL OF INDIAN EDUCATION, vol. 44, no. 1, May 2018, pp. p. 5-36, http://ejournals.ncert.gov.in/index.php/jie/article/view/2427.