Steyn, L. and Maina, J. 2014. Comparing the numbers of four bird species, House Sparrow, Cape Glossy Starling, Laughing Doves and Cape Turtle Dove in Gauteng and Limpopo. Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / <i>South African Journal of Science and Technology</i&gt;. 33, 1 (Oct. 2014), 1 bladsy. DOI:https://doi.org/10.4102/satnt.v33i1.1264.