Gillespie, Alexander
Oxford University press, 2014
Buku Teks SO
Donaldson, Thomas
Oxford University Press, 1989
Buku Teks SO
Burton, Arthur W.
Medical Publishing, 1974
Buku Teks SO
Kerridge, Ian
Social Science Press, 1998
Buku Teks SO
Bickenbach, Jerome E., 1948-
Sage, 2012
Buku Teks