Osullivan, J. (2014). Law of Contract (6th ed.). OUP.
Lua i Stíl Chicago (17ú heag.)Osullivan, Janet. Law of Contract. 6th ed. New Delhi: OUP, 2014.
Lua MLA (9ú heag.)Osullivan, Janet. Law of Contract. 6th ed. OUP, 2014.
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