Ryan-Jones, D. L. (1979). A comparison of expert ratings of task difficulty with an independent criterion. U.S. Army Research Institute for the Behavioral and Social Sciences.
Chicago Style (17th ed.) CitationRyan-Jones, David L. A Comparison of Expert Ratings of Task Difficulty with an Independent Criterion. Alexandria, Virginia: U.S. Army Research Institute for the Behavioral and Social Sciences, 1979.
MLA (9th ed.) CitationRyan-Jones, David L. A Comparison of Expert Ratings of Task Difficulty with an Independent Criterion. U.S. Army Research Institute for the Behavioral and Social Sciences, 1979.
Warning: These citations may not always be 100% accurate.