Sadangi, Chandan Kumar, author
Emerald, 2017
eBooks
Langer, William L., author
Harper Torchbooks, 1969
Buku Teks
Robinson, Marguerite S., author
Oxford University Press, 1988
Buku Teks
Kotter, John P., 1947-, author
The Free Press, 1990
Buku Teks
Srinivas, M.N., author
University of California Press, 1973
Buku Teks