Buckland, W. R. (1964). Statistical assessment of the life characteristic, a bibliographic data. Giffin.
Lua i Stíl Chicago (17ú heag.)Buckland, William R. Statistical Assessment of the Life Characteristic, a Bibliographic Data. London: Giffin, 1964.
Lua MLA (9ú heag.)Buckland, William R. Statistical Assessment of the Life Characteristic, a Bibliographic Data. Giffin, 1964.
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