Franklin, Marc A., author
The Foundation Press, 1979
Buku Teks
Huitema, Bradley E.
John Wiley & Sons, 1980
Buku Teks
Link, Albert N., author
Springer, 2006
Buku Teks
Melville, Arbaella, author
Willliam Collins & Sons, 1987
Buku Referensi
Kitzinger, Sheila
Darling Kendersley , 1991
Buku Teks