Não informado. (2014). Quality and Quantity. Kluwer Academic Publishers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Quality and Quantity. Dordrecht, Holanda: Kluwer Academic Publishers, 2014.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Quality and Quantity. Kluwer Academic Publishers, 2014.
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