Darley, F. L. (1979). Evaluation of appraisal techniques in speech and language pathology: Frederic L. Darley. Addison-Wesley.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDarley, Frederic L. Evaluation of Appraisal Techniques in Speech and Language Pathology: Frederic L. Darley. Reading, Mass: Addison-Wesley, 1979.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDarley, Frederic L. Evaluation of Appraisal Techniques in Speech and Language Pathology: Frederic L. Darley. Addison-Wesley, 1979.
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