Ruppert, Edward E., author
Saunders College, 1994
Buku Teks
Moore, Raymond C., author
McGraw-Hill, 1952
Buku Teks
Tombes, A.S.
Academic Press, 1970
Buku Teks
Barnes, Robert D., author
Saunders, 1969
Buku Teks
edited by D.T. Anderson
Melbourne, 1998
Buku Teks