Junsuke Hara
Trans Pacific Press, 2005
Buku Teks
Niwata, Noriaki
The Insurance Institute of the Keio University , 1986
Buku Teks
edited by Roger Goodman
Cambridge University Press, 2002
Buku Teks
Scheiner, Irwin
University of California Press, 1970
Buku Teks
editor, Heide and Udo ernst Simonis
Otto Harrassowitz - Wiebaden , 1974
Buku Teks