TUMUL SINGH, and RAMESH SINGH. “CIRCADIAN VARIATION IN PERIPHERAL BLOOD LEUKOCYTES, THE PRIMARY IMMUNE CELLS, IN THE GARDEN LIZARD, CALOTES VERSICOLOR (DAUDIN)”. The Bioscan, vol. 7, no. 2, May 2012, pp. 211-4, https://thebioscan.com/index.php/pub/article/view/1000.