Alpa, G. (1987). Contratto e common law. CEDAM.
Tohutoru Kātū Chicago (17th ed.)Alpa, Guido. Contratto E Common Law. Padua: CEDAM, 1987.
Tohutoro MLA (9th ed.)Alpa, Guido. Contratto E Common Law. CEDAM, 1987.
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