Petruzella, Frank D., author
McGraw-Hill, 1996
Buku Teks
Siegel, Laurence, author
Richard D. Irwin, 1968
Buku Teks
Tiffin, Joseph, author
Prentice-Hall, 1958
Buku Teks
Eckman, Donald P., author
Wiley, 1950
Buku Teks
Dearing, Charles L., author
The Brookings Institution , 1954
Buku Teks