Calamari, J. D., Perillo, J. M., & Bender, H. H. (2007). Cases and problems on contracts (5th ed.). Thomson/West.
Lua i Stíl Chicago (17ú heag.)Calamari, John D., Joseph M. Perillo, agus Helen Hadjiyannakis Bender. Cases and Problems on Contracts. 5th ed. St. Paul, MN: Thomson/West, 2007.
Lua MLA (9ú heag.)Calamari, John D., et al. Cases and Problems on Contracts. 5th ed. Thomson/West, 2007.
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