Kragh, Helge (1989), An Introduction to the Historiography of Science, Cambridge University Press, p. 121, ISBN0-521-38921-6, archived from the original on 21 January 2018 ("[T]he distinction is not a sharp one. Since a source is only a source in a specific historical context, the same source object can be both a primary or secondary source according to what it is used for."); Delgadillo, Roberto; Lynch, Beverly (1999), "Future Historians: Their Quest for Information"(PDF), College & Research Libraries, 60 (3): 245–259, at 253, doi:10.5860/crl.60.3.245, archived(PDF) from the original on 4 March 2016 ("[T]he same document can be a primary or a secondary source depending on the particular analysis the historian is doing"); Monagahn, E.J.; Hartman, D.K. (2001), "Historical research in literacy", Reading Online, 4 (11), archived from the original on 14 December 2007 ("[A] source may be primary or secondary, depending on what the researcher is looking for.").
Dalton, Margaret Steig; Charnigo, Laurie (2004), "Historians and Their Information Sources"(PDF), College & Research Libraries, September (5): 400–25, at 416 n.3, doi:10.5860/crl.65.5.400, archived from the original on 3 October 2023, citing U.S. Dept. of Labor, Bureau of Labor Statistics (2003), Occupational Outlook Handbook; Lorenz, C. (2001), "History: Theories and Methods", in Smelser, Neil J.; Baltes, Paul B. (eds.), International Encyclopedia of Social and Behavior Sciences, vol. 10, Amsterdam: Elsevier, p. 6871.
Duff, Alistair (1996), "The literature search: a library-based model for information skills instruction", Library Review, 45 (4): 14–18, doi:10.1108/00242539610115263 ("A primary source is defined here as a source containing new information authored by the original researcher(s) and not previously published elsewhere.").
Kragh, Helge (1989), An Introduction to the Historiography of Science, Cambridge University Press, p. 121, ISBN0-521-38921-6, archived from the original on 21 January 2018 ("[T]he distinction is not a sharp one. Since a source is only a source in a specific historical context, the same source object can be both a primary or secondary source according to what it is used for."); Delgadillo, Roberto; Lynch, Beverly (1999), "Future Historians: Their Quest for Information"(PDF), College & Research Libraries, 60 (3): 245–259, at 253, doi:10.5860/crl.60.3.245, archived(PDF) from the original on 4 March 2016 ("[T]he same document can be a primary or a secondary source depending on the particular analysis the historian is doing"); Monagahn, E.J.; Hartman, D.K. (2001), "Historical research in literacy", Reading Online, 4 (11), archived from the original on 14 December 2007 ("[A] source may be primary or secondary, depending on what the researcher is looking for.").
Kragh, Helge (1989), An Introduction to the Historiography of Science, Cambridge University Press, p. 121, ISBN0-521-38921-6, archived from the original on 21 January 2018 ("[T]he distinction is not a sharp one. Since a source is only a source in a specific historical context, the same source object can be both a primary or secondary source according to what it is used for."); Delgadillo, Roberto; Lynch, Beverly (1999), "Future Historians: Their Quest for Information"(PDF), College & Research Libraries, 60 (3): 245–259, at 253, doi:10.5860/crl.60.3.245, archived(PDF) from the original on 4 March 2016 ("[T]he same document can be a primary or a secondary source depending on the particular analysis the historian is doing"); Monagahn, E.J.; Hartman, D.K. (2001), "Historical research in literacy", Reading Online, 4 (11), archived from the original on 14 December 2007 ("[A] source may be primary or secondary, depending on what the researcher is looking for.").
Kragh, Helge (1989), An Introduction to the Historiography of Science, Cambridge University Press, p. 121, ISBN0-521-38921-6, archived from the original on 21 January 2018 ("[T]he distinction is not a sharp one. Since a source is only a source in a specific historical context, the same source object can be both a primary or secondary source according to what it is used for."); Delgadillo, Roberto; Lynch, Beverly (1999), "Future Historians: Their Quest for Information"(PDF), College & Research Libraries, 60 (3): 245–259, at 253, doi:10.5860/crl.60.3.245, archived(PDF) from the original on 4 March 2016 ("[T]he same document can be a primary or a secondary source depending on the particular analysis the historian is doing"); Monagahn, E.J.; Hartman, D.K. (2001), "Historical research in literacy", Reading Online, 4 (11), archived from the original on 14 December 2007 ("[A] source may be primary or secondary, depending on what the researcher is looking for.").
Dalton, Margaret Steig; Charnigo, Laurie (2004), "Historians and Their Information Sources"(PDF), College & Research Libraries, September (5): 400–25, at 416 n.3, doi:10.5860/crl.65.5.400, archived from the original on 3 October 2023, citing U.S. Dept. of Labor, Bureau of Labor Statistics (2003), Occupational Outlook Handbook; Lorenz, C. (2001), "History: Theories and Methods", in Smelser, Neil J.; Baltes, Paul B. (eds.), International Encyclopedia of Social and Behavior Sciences, vol. 10, Amsterdam: Elsevier, p. 6871.
Kragh, Helge (1989), An Introduction to the Historiography of Science, Cambridge University Press, p. 121, ISBN0-521-38921-6, archived from the original on 21 January 2018 ("[T]he distinction is not a sharp one. Since a source is only a source in a specific historical context, the same source object can be both a primary or secondary source according to what it is used for."); Delgadillo, Roberto; Lynch, Beverly (1999), "Future Historians: Their Quest for Information"(PDF), College & Research Libraries, 60 (3): 245–259, at 253, doi:10.5860/crl.60.3.245, archived(PDF) from the original on 4 March 2016 ("[T]he same document can be a primary or a secondary source depending on the particular analysis the historian is doing"); Monagahn, E.J.; Hartman, D.K. (2001), "Historical research in literacy", Reading Online, 4 (11), archived from the original on 14 December 2007 ("[A] source may be primary or secondary, depending on what the researcher is looking for.").
