Summers, R. S., Hillman, R. A., & Hoffman, D. A. (2016). Contract and related obligation: Theory, doctrine, and practice (Seventh edition.). West Academic Publishing.
Chicago-Zitierstil (17. Ausg.)Summers, Robert S., Robert A. Hillman, und David A. Hoffman. Contract and Related Obligation: Theory, Doctrine, and Practice. Seventh edition. St. Paul, MN: West Academic Publishing, 2016.
MLA-Zitierstil (9. Ausg.)Summers, Robert S., et al. Contract and Related Obligation: Theory, Doctrine, and Practice. Seventh edition. West Academic Publishing, 2016.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.