Edwards, H.M. (2001), Riemann's Zeta Function, Mineola, New York: Courier Dover Publications, p. xi, ISBN0-486-41740-9, https://books.google.com/books?id=5uLAoued_dIC&pg=PR9&dq=%22primary+sources%22, "The purpose of a secondary source is to make the primary sources accessible to you. If you can read and understand the primary sources without reading this book, more power to you. If you read this book without reading the primary sources you are like a man who carries a sack lunch to a banquet"
Henige, David (1986), “Primary Source by Primary Source? On the Role of Epidemics in New World Depopulation”, Ethnohistory (Duke University Press) 33 (3): 292–312, at 292, doi:10.2307/481816, JSTOR481816, https://jstor.org/stable/481816, "[T]he term 'primary' inevitably carries a relative meaning insofar as it defines those pieces of information that stand in closest relationship to an event or process in the present state of our knowledge. Indeed, in most instances the very nature of a primary source tells us that it is actually derivative.…[H]istorians have no choice but to regard certain of the available sources as 'primary' since they are as near to truly original sources as they can now secure."
Henige, David (1986), “Primary Source by Primary Source? On the Role of Epidemics in New World Depopulation”, Ethnohistory (Duke University Press) 33 (3): 292–312, at 292, doi:10.2307/481816, JSTOR481816, https://jstor.org/stable/481816, "[T]he term 'primary' inevitably carries a relative meaning insofar as it defines those pieces of information that stand in closest relationship to an event or process in the present state of our knowledge. Indeed, in most instances the very nature of a primary source tells us that it is actually derivative.…[H]istorians have no choice but to regard certain of the available sources as 'primary' since they are as near to truly original sources as they can now secure."
Virginia Polytechnic Institute and State University (2011年). “Book reviews”. Scholarly definition document. Virginia Polytechnic Institute and State University. 2011年9月10日時点のオリジナルよりアーカイブ。2011年9月22日閲覧。
web.archive.org
Virginia Polytechnic Institute and State University (2011年). “Book reviews”. Scholarly definition document. Virginia Polytechnic Institute and State University. 2011年9月10日時点のオリジナルよりアーカイブ。2011年9月22日閲覧。