Ranlett, John G.
John Wiley & Sons, 1969
Buku Teks
Ranlett, John G.
John Wiley & Sons, 1965
Buku Teks
Bach, George Leland
Prentice Hall of India, 1977
Buku Teks
Whittless, Charles R.
Macmillan, 1963
Buku Teks
Campbell, Colin D.
The Dryden , 1983
Buku Teks