Hull L. PERFECTING THE ART
OF Siegecraft. Military History [serial online]. December 2004;21(5):46.
Available from: MAS Ultra - School Edition, Ipswich, MA. Accessed September 25,
2013.
wagnal, F. (n.d.). the art of siege
warfare. In S. Weinfeld (Ed.),funk and wagnal encyclopediawashington DC:
Funk Wagnalls inc.
Freudenrich, Ph.D., Craig. "How Castles Work" 28 July 2008.
HowStuffWorks.com.
< http://history.howstuffworks.com/historical-figures/castle.htm> 25
September 2013.
"How does a catapult work?" 01 April 2000.
HowStuffWorks.com.
< http://science.howstuffworks.com/transport/engines-equipment/question127.htm>
25 September 2013.
Trebuchet.
(n.d.). Merriam-Webster.com. Retrieved September 25, 2013, from
http://www.merriam-webster.com/dictionary/trebuchet
OF Siegecraft. Military History [serial online]. December 2004;21(5):46.
Available from: MAS Ultra - School Edition, Ipswich, MA. Accessed September 25,
2013.
wagnal, F. (n.d.). the art of siege
warfare. In S. Weinfeld (Ed.),funk and wagnal encyclopediawashington DC:
Funk Wagnalls inc.
Freudenrich, Ph.D., Craig. "How Castles Work" 28 July 2008.
HowStuffWorks.com.
< http://history.howstuffworks.com/historical-figures/castle.htm> 25
September 2013.
"How does a catapult work?" 01 April 2000.
HowStuffWorks.com.
< http://science.howstuffworks.com/transport/engines-equipment/question127.htm>
25 September 2013.
Trebuchet.
(n.d.). Merriam-Webster.com. Retrieved September 25, 2013, from
http://www.merriam-webster.com/dictionary/trebuchet