Chall, J. S. (1974). Readability: An appraisal of research and application. Published for the College of Librarianship Wales by Bowker Pub. Company.
Citazione stile Chigago Style (17a edizione)Chall, Jeanne Sternlicht. Readability: An Appraisal of Research and Application. Epping, Essex: Published for the College of Librarianship Wales by Bowker Pub. Company, 1974.
Citatione MLA (9a ed.)Chall, Jeanne Sternlicht. Readability: An Appraisal of Research and Application. Published for the College of Librarianship Wales by Bowker Pub. Company, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.