1. Aikenhead, G. (1993). Foreword: Multicultural issues and perspectives on science education. Science Education, 77(6), 659–666.
2. Aristotle. (1961). Moral and intellectual virtues. In M. K. Munitz (Ed.), A modern introduction to ethics: Readings from classical and contemporary sources (pp. 131–167). USA: The Free Press, a Corporation.
3. Basu, S., & Singh, J. (2015, July 8). Man-made reasons for Uttarakhand disaster. Down to Earth. Retrieved from https://www.downtoearth.org.in/news/natural-disasters/man-made-reasons-for-uttarakhand-disaster-41407 .
4. Beauchamp, T., & Childress, J. (2008). Principles of biomedical ethics (6th ed.). New York: Oxford.
5. Bentham, J. (1961). The Principle of Utility. In M. K. Munitz (Ed.), A modern introduction to ethics: Readings from classical and contemporary sources (pp. 185–190). USA: The Free Press, a Corporation.