Christman, Luther P.
Westview Press, 1981
Buku Teks
Sultz, Harry A.
Jones & Bartlett Learning, 2014
Buku Teks
Griffin, Don
Jones & Bartlett, 2009
Buku Teks
Shortell, Stephen Michael, 1944-
John Wiley & Sons, 1988
Buku Teks
Shortell, Stephen Michael, 1944-
John Wiley & Sons, 1983
Buku Teks