Umiker, William
An Aspen , 1988
Buku Teks
McConnell, Charles R., author
Jones & Bartlett Learning, 2014
Buku Teks
Shortell, Stephen Michael, 1944-, author
John Wiley & Sons, 1988
Buku Teks
Shortell, Stephen Michael, 1944-, author
John Wiley & Sons, 1983
Buku Teks
Goldsmith, Seth B., author
An Aspen, 1981
Buku Teks