J. Ayo and V. Sinkalu, “Effects of Ascorbic Acid on Diurnal Variations in Rectal Temperature of Shaver Brown Pullets During the Hot-Dry Season”, Int. J. Poult. Sci., vol. 6, no. 9, pp. 642–646, Aug. 2007, doi: 10.3923/ijps.2007.642.646.