(2007). The law of contract (ed.3.). Lexis Nexis Buttorworths.
Chicago Style aipamenaThe Law of Contract. ed.3. London: Lexis Nexis Buttorworths, 2007.
MLA aipamenaThe Law of Contract. ed.3. Lexis Nexis Buttorworths, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.