APA (7 वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, & Czaja, S. J. (1990). Human factors research needs for an aging population. National Academy Press : Additional copies of this report are available from National Research Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, और Sara J. Czaja. Human Factors Research Needs for an Aging Population. Washington, D.C.: National Academy Press : Additional copies of this report are available from National Research Council, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
ebrary, Inc, और Sara J. Czaja. Human Factors Research Needs for an Aging Population. National Academy Press : Additional copies of this report are available from National Research Council, 1990.
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