Page, N. K. (1955). Protective service; a case illustrating casework with parents. Child Welfare League of America.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPage, Norman Knoll. Protective Service; a Case Illustrating Casework with Parents. New York: Child Welfare League of America, 1955.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPage, Norman Knoll. Protective Service; a Case Illustrating Casework with Parents. Child Welfare League of America, 1955.
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