Sreedharan, E. (2004). A Textbook of Historiography, 500 B.C. to A.D. 2000. Orient Longman, გვ. 302. ISBN81-250-2657-6. „[I]t is through the primary sources that the past indisputably imposes its reality on the historian. That this imposition is basic in any understanding of the past is clear from the rules that documents should not be altered, or that any material damaging to a historian's argument or purpose should not be left out or suppressed. These rules mean that the sources or the texts of the past have an integrity and that they do indeed 'speak for themselves', and that they are necessary constraints through which past reality imposes itself on the historian.“
Book reviews. Virginia Polytechnic Institute and State University. დაარქივებულია ორიგინალიდან — 10 სექტემბერი 2011. ციტირების თარიღი: 22 September 2011.
Book reviews. Virginia Polytechnic Institute and State University. დაარქივებულია ორიგინალიდან — 10 სექტემბერი 2011. ციტირების თარიღი: 22 September 2011.
