Chandler, Alfred D. Jr.
Cambridge, Mass. Massachusetts Institute of Technology Press 973,
Buku Teks
Chandler, Alfred D.
MIT Press, 1980
Buku Teks
Harcourt , 1964
Buku Teks
Webster, Frederick E., Jr
John Wiley & Sons, 1991
Buku Teks
Cochran, Thomas C., author
Macmillan, 1947
Buku Teks