Chandler, Alfred D.
MIT Press, 1980
Buku Teks
Naidu, G. Dhanunjaya, author
Springer, 2012
eBooks
Anshen, Melvin
Macmillan, 1954
Buku Teks
edited by S. Prakash Sethi and Carl L. Swanson
John Wiley & Sons, 1981
Buku Teks
Gosh, Barbara
Lynne Rienner, 1991
Buku Teks