The University of Nagoya Press, 1984
Buku Teks
Editor: William H. Beyer
CRC Press, 1988
Buku Referensi
Manton, Kenneth G.
Orlando Academic Press , 1984
Buku Teks
Kokoska, Stephen
Springer-Verlag, 1989
Buku Teks
Coale, Ansley J., author
Princeton Univ. Press , 1966
Buku Teks