Saxena, Rajan, author
Tata McGraw-Hill, 1984
Buku Teks
Hansen, Harry L., author
Richard D. Irwin, 1968
Buku Teks
Morris, J.H.C.
At The Clarendon Press, 1960
Buku Teks
Richard Crawford Pugh
St.paul Minn, 1993
Buku Teks
John E. Noyes
St.paul Minn, 1997
Buku Teks