Grimault, Jacques. "Phi, Pi and the Great Pyramid." Phi 1618 The Golden Number RSS. N.p., n.d. Web. 18 Apr. 2014.
Tompkins, Peter (1971) Secrets of the Great Pyramid. New York: Harper & Row.
Lally, Michael T. "Engineering a Pyramid." Journal of the American Research Center in Egypt: 1989, v. 24, pp. 207-218.
Boxer, Sarah. "Herodotus's theory of how the pyramids were built gets a lift." Discover: June 1987, v. 8, pp. 8-9.
Pictures -
http://www.touregypt.net/images/touregypt/pyramidlift5.jpg
http://www.touregypt.net/images/touregypt/pyramidlift9.jpg
http://www.touregypt.net/images/touregypt/pyramidlift8.jpg
http://upload.wikimedia.org/wikipedia/commons/e/eb/Snefru's_Bent_Pyramid_in_Dahshur.jpg
http://www.physics247.com/physics-homework-help/images/FBD3b.jpg
http://jonathanturley.files.wordpress.com/2012/07/pyramids_of_giza.jpg
http://visual.merriam-webster.com/images/science/physics-mechanics/lever.jpg
http://www.fao.org/docrep/010/ah810e/AH810E47.gif
https://farm8.staticflickr.com/7237/7354626828_d09056ebfb.jpg
