Brown, Robert H.
Witherby & co. Ltd., 1975
Buku Teks
Rodda, William H.
Prentice-Hall, 1955
Buku Teks
Mueller-Lutz, H.L.
Institut fuer Versicherungwissenschaft der Ludwig-Maximilians-Universitaet Muenchen, 1994
Buku Referensi
Goodacre, J. Kenneth
Witherby, 1981
Buku Teks
Mullins, Hugh A.
Cornell maritime Press, 1959
Buku Teks