APA (7 वां संस्करण) प्रशस्ति पत्र
Hugman, R. (1994). Ageing and the care of older people in Europe. ST. Martin's Press, Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Hugman, Richard. Ageing and the Care of Older People in Europe. New York: ST. Martin's Press, Inc., 1994.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Hugman, Richard. Ageing and the Care of Older People in Europe. ST. Martin's Press, Inc., 1994.
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