Newman, William R. (5 آوریل 2007). "Newton and Alchemy". The Chymistry of Isaac Newton Project. Archived from the original on 7 August 2007. Retrieved 12 August 2007.
William R. Newman, History of Science Professor, Indiana University index
Newman, William R. (5 آوریل 2007). "Newton and Alchemy". The Chymistry of Isaac Newton Project. Archived from the original on 7 August 2007. Retrieved 12 August 2007.