Espie, C., Lindsay, W., Brooks, D., Hood, E., & Turvey, T. (1989). A controlled comparative investigation of psychological treatments for chronic sleep-onset insomnia.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEspie, C., W. Lindsay, D. Brooks, E. Hood, और T. Turvey. A Controlled Comparative Investigation of Psychological Treatments for Chronic Sleep-onset Insomnia. 1989.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEspie, C., et al. A Controlled Comparative Investigation of Psychological Treatments for Chronic Sleep-onset Insomnia. 1989.
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