Minelli, Alessandro
Chapman & Hall, 1993
Buku Teks
Wiley, E.O., author
John Wiley & Sons, 1981
Buku Teks
Boughey, Arthur S., author
Dickenson , 1967
Buku Teks
Scott-Ram, N.R.
Cambridge University Press, 1989
Buku Teks
Panchen, Alec L., author
Cambridge University Press, 1994
Buku Teks