1. http://en.wikipedia.org/wiki/ “Printing”.
2. http://en.wikipedia.org / “Sheet Fed Offset Printing”
3. Helmut Kipphan/ “Handbook of Print Media”.
4. Shinichi Fujimoto,Yasuhiko Hirata,“Development of a new sheet-fed offset press”.
5. A John Wiley & Sons, Inc. Publication (2009)/ “The Wiley Encyclopedia of packaging Technology” (3rd Edition)/ pp 162 - 180, 908 - 920.
6. Mark J. Kirwan (2005) Published by Blackwell Ltd/ “Packaging Technology” / pp 1 - 20.
7. C S Misra Published by Anupam Prakshan/ “ Offset technology - Makeready operations”