edited by John I. Gallin and Frederick P. Ognibene
Academic press, 2007
Buku Teks SO
Swage, Thoreya
Butterworth-Heinemann , 2004
Buku Teks
Stommel, Manfred
Lippincott Williams & Wilkins, 2004
Buku Teks SO
edited by Jeyanth Asheervath and Dorothy R. Blevins
Appleton-Century-Crofts, 1986.
Buku Referensi
National Institute for Clinical Excellence
Radcliffe Medical Press, 2006
Buku Teks