Bradshaw, Peter L., author
Sage, 2004
Buku Teks
Niven, Neil
Churchill Livingstone , 1994
Buku Teks
Zuckerman, Alan M., author
Health administration press, 2012
Buku Teks
Bernstein, Lewis
Norwalk Appletton century crofts , 1985
Buku Teks
Rungapadiachy, Dev M., author
Butterworth-Heinemann, 1999
Buku Teks