Boag, Andrew (2000). "Monotype and Phototypesetting"(PDF). Journal of the Printing History Society: 57–77. Archived from the original(PDF) on 28 March 2016. Retrieved 22 July 2016.
Boag, Andrew (2000). "Monotype and Phototypesetting"(PDF). Journal of the Printing History Society: 57–77. Archived from the original(PDF) on 28 March 2016. Retrieved 22 July 2016.