King, R. J. R., & Calvert, B. (1970). Sixty and over: A study of the needs of elderly people in New Zealand. Otago Old Peoples Walfare Council.
Παραπομπή σε μορφή Chicago (17η εκδ.)King, Raymond J. R., και Barbara Calvert. Sixty and over: A Study of the Needs of Elderly People in New Zealand. [Dunedin]: Otago Old Peoples Walfare Council, 1970.
Παραπομπή σε μορφή MLA (8th εκδ.)King, Raymond J. R., και Barbara Calvert. Sixty and over: A Study of the Needs of Elderly People in New Zealand. Otago Old Peoples Walfare Council, 1970.
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