Ebb, Lawrence F.
West Publishing Company, 1964
Buku Teks
Fulda, Carl H.
Foundation Press, 1970
Buku Teks
Soe, Myint
Singapore Insurance Training Centre, 1977
Buku Teks
Ratner, David L.
West Publishing, 1996
Buku Teks
Handler, Milton
University Casebook, 1972
Buku Teks