Sinar Baru, 1980
Buku Teks
Stone, Raymond J., author
John Wiley & Sons, 1995
Buku Teks
Broaded, Charley H., author
Harper & Brothers, 1947
Buku Teks
Heckman, I. L., author
Charles E. Merrill, 1962
Buku Teks
Schleh, Edward C., author
Prentice-Hall, 1958
Buku Teks