Harrington, R.B., author
Dickenson, 1970
Buku Teks
Clark, Frank J., author
Erlangga, 1985
Buku Teks
Armstrong, James W., author
Macmillan, 1976
Buku Teks
Campbell, Hugh G., author
Macmillan, 1974
Buku Teks
Rothenberg, Ronald I., author
John Wiley & Sons, 1980
Buku Teks