Text ( visual ) : unmediated From reliable sources : an introduction to historical methods / Martha Howell and Walter Prevenier. -- : pbk. -- Ithaca : Cornell University Press , 2001. -- viii, 207 p. ; 24 cm. -- Includes bibliographical references (p. [151]-195) and index. -- ISBN 0801435730 ; 9780801485602 ; (BA52433321) ; https://ci.nii.ac.jp/ncid/BA52433321 Author Heading(s): Howell, Martha C. ; Prevenier, Walter. -- Classification(s): LCC : D16 ; DC21 : 907/.2 ; NDC9 : 201.16. -- Subject Heading(s): LCSH : History -- Methodology ; LCSH : History -- Research ; LCSH : Historiography ; LCSH : History -- Philosophy