Ashcroft, Neil W., author
Saunders College, 1976
Buku Teks
Hall, Hennry Edgar, author
John Wiley & Sons, 1974
Buku Teks
Streetman, Ben G., author
Pearson, 2015
Buku Teks
Bell, David A., 1930-, author
Reston Publishing, 1981.
Buku Teks
Wang, Franklin F.Y., author
North-Holland, 1980
Buku Teks