Zumberge, James H., author
W.M.C. Brown, 1967
Buku Teks
Plowden, C. Chicheley
George Allen and Unwin, 1972
Buku Teks
Shellhammer, H. S., author
The National Press, 1965
Buku Teks
Cable, Raymond M., author
Burgess, 1958
Buku Teks
Vodopich, Darrell S., author
McGraw-Hill , 2005
Buku Teks