AirdI. (1957). A companion in surgical studies, p. 909. Edinburgh and London: Livingstone
2.
DavidV. C.LauerC. A. (1932). Stricture of rectum, with consideration of some unusual causes. J. Amer. med. Ass., 98, 1
3.
FarquharsonE. L. (1954). Textbook of operative surgery, p. 650. Edinburgh and London: Livingstone
4.
GabrielW. B. (1948). The principles and practice of rectal surgery, 4th edition, p. 95 and 97. London: Lewis
5.
HughesE. S. R. (1957). Surgery of the anus, anal canal and rectum, p. 147. Edinburgh and London: Livingstone
6.
KilbourneN. J. (1934). Internal haemorrhoids. Comparative value of treatment by operative and by injection methods. Ann. Surg., 99, 600
7.
MilliganE. T. C. (1930). Discussion on the complications of operations for piles. Proc. roy. Soc. Med., 23, 702
8.
MilliganE. T. C.MorganN. C.JonesL. E.OfficerR. (1937). Surgical anatomy of the anal canal, and the operative treatment of haemorrhoids. Lancet, 2, 1119