* Krishnamurthy, N. (2 de julio de 2013). Engg. Chemistry, 2/e. New York: PHI Learning Private Limited. pp. 82-83. ISBN 978-81-203-3666-7 | * Krishnamurthy, N. (2 de julio de 2013). Engg. Chemistry, 2/e. New York: PHI Learning Private Limited. pp. 82-83. ISBN 978-81-203-3666-7 |