Friis, Robert H., author
Jones and Bartlett Publishers , 2014
Buku Teks
Healely, Bernard J., author
Jossey-Bass, 2009
Buku Teks
Dunning, James Morse
Harvard University Press, 1974
Buku Teks
Dunning, James Morse
Harvard University Press, 1979
Buku Teks
Dunning, James Morse
Harvard University Press, 1980
Buku Teks