Haberman, William L., 1922-, author
Boston: Allyn and Bacon, 1980
Buku Teks
Sullivan, William G., 1942-, author
Prentice-Hall, 2000
Buku Teks
Niebel, Benjamin W., author
Asian Productivity Organization, 1971
Buku Teks
Cleland, David I., author
McGraw-Hill , 1980
Buku Teks
Riggs, James L., author
McGraw-Hill, 1982
Buku Teks