Jacobs, H. “Chronological Review of South African Guidelines for Residential Average Annual Water Demand With Property Size As Independent Variable”. Suid-Afrikaans Tydskrif Vir Natuurwetenskap En Tegnologie / <i>South African Journal of Science and Technology</I&gt;, Vol. 27, no. 4, Sept. 2008, pp. 240-65, doi:10.4102/satnt.v27i4.94.