Reynolds, Amanda
Open universtity press , 2000
Buku Teks
edited by Allan McNaught
Chapman and Hall , 1991
Buku Teks
edited by Charles B. Inlander, Alan M. Rees
Oryx, 1991
Buku Teks SO
Rakich, Jonathon S.
Health Professions Press, 1992
Buku Referensi
edited by Gary E. Day and Sandra G. Leggat
Cambridge University Press, 2015
Buku Teks