Books, Brochures, and Chapters>Book:  İldan , Mehmet Murat (2001), Galileo Galilei, Retrieved on 2012-06-06

Source Material [books.google.com]

Books, Brochures, and Chapters>Book:  Bacon , Francis (2005-11-30), The Novum Organon, or a True Guide to the Interpretation of Nature, Adamant Media Corporation, Retrieved on 2011-05-17

Source Material [www.constitution.org]

Books, Brochures, and Chapters>Book:  Gilovich , Thomas (1993-03-05), How We Know What Isn't So: The Fallibility of Human Reason in Everyday Life, Free Press, Retrieved on 2011-05-04

Books, Brochures, and Chapters>Book:  Komnene , Anna (2009-09-29), The Alexiad (Penguin Classics), Penguin Classics, Retrieved on 2011-04-12

Source Material [www.fordham.edu]