Bailley, Norman T. J., author
Charles Griffin, 1975
Buku Teks
Academic Press, 1977
Buku Teks
Ramachandran, Kandethody M., author
Atlantis Press, 2012
eBooks
Deo, Narsingh, 1936-, author
Prantice-Hall, 1990
Buku Teks
Rosenberg, Jonathan
Springer, 1944
Buku Teks