Schonell, F. J., & Schonell, F. E. (1950). Diagnostic and attainment testing : including a manual of tests, their nature, use, etc / by F.J. Schonell and F.E. Schonell: Including a manual of tests, their nature, use, etc. Oliver and Boyd.
Chicago Style (17th ed.) CitationSchonell, Fred J., and F. E. Schonell. Diagnostic and Attainment Testing : Including a Manual of Tests, Their Nature, Use, Etc / by F.J. Schonell and F.E. Schonell: Including a Manual of Tests, Their Nature, Use, Etc. Oliver and Boyd, 1950.
MLA (9th ed.) CitationSchonell, Fred J., and F. E. Schonell. Diagnostic and Attainment Testing : Including a Manual of Tests, Their Nature, Use, Etc / by F.J. Schonell and F.E. Schonell: Including a Manual of Tests, Their Nature, Use, Etc. Oliver and Boyd, 1950.