1. ANTHONY, E.L.P. 1988. Age determination in bats. In: Ecological and Behavioural Methods for the Study of Bats, (ed.) T.H. Kunz, pp. 47–57. Smithsonian Institution, Washington DC.
2. AVMA: American Veterinary Medical Association. 2013. AVMA Guidelines For The Euthanasia Of Animals: 2013 Edition. Schaumburg.
3. BARCLAY, R.M.R. & HARDER, L.D. 2003. Life histories of bats: life in the slow lane. In: Bat Ecology, (eds) T.H. Kunz & M.B. Fenton, pp. 209–253. University of Chicago Press, Chicago, U.S.A.
4. CLARK, D.R. & SHORE, R.F. 2001. Chiroptera. In: Ecotoxicology of Wild Mammals, (eds) R.F. Shore & B.A. Rattner, pp. 159–214. John Wiley, Chichester.
5. DWAF, 2009. Wastewater treatment works: details and assets. Verulam Council STW Project code ETH. Department of Water Affairs and Forestry, Pretoria.