Calamari, John D.
Contracts
West Publishing, 1990
Buku Teks
Eisenberg, Melvin A.
Contracts Gilbert law summaries
Harcourt Brace, 1994
Buku Teks
Farnsworth, E. Allan
Contracts
Little, Brown, 1990
Buku Teks
Emanuel, Steven
Contracs
Larchmont, 1993
Buku Teks
Schaber, Gordon D.
Contracts in a nutshell
West Publishing, 1990
Buku Teks