Valiga, Theresa M., author
Springer, 1997
Buku Teks
Birkett, Julian, author
A & C Black, 1993
Buku Teks
Johnson, Hewlett, author
Lawrence and Wishart, 1953
Buku Teks
Rocknow, H.K., author
Stuttman, 1954
Buku Teks
Cambridge University Press, 2007
eBooks