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Citação do estilo Chicago (17ª ed.)World Federation of Neurosurgical Societies. Critical Reviews in Neurosurgery. Berlin: Springer Verlag, 1991.
Citação MLA (8ª ed.)World Federation of Neurosurgical Societies. Critical Reviews in Neurosurgery. Springer Verlag, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.