Schonell, F. J., & Schonell, F. E. (1960). Diagnostic and attainment testing: Including a manual of tests, their nature, use, recording and interpretation (4th ed.). Oliver and Boyd.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Schonell, Fred J., و F. Eleanor Schonell. Diagnostic and Attainment Testing: Including a Manual of Tests, Their Nature, Use, Recording and Interpretation. 4th ed. Edinburgh: Oliver and Boyd, 1960.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Schonell, Fred J., و F. Eleanor Schonell. Diagnostic and Attainment Testing: Including a Manual of Tests, Their Nature, Use, Recording and Interpretation. 4th ed. Oliver and Boyd, 1960.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.