Anjum B, N S Verma, Tiwari S, Fatima G, Bhardwaj S, Naz Q, Singh P, Mishra S, Singh R, and Mahdi A A. 2014. “EFFECTS OF ROTATING NIGHT SHIFT AND EXPOSURE OF LIGHT AT NIGHT ON CIRCADIAN PATTERN OF SALIVARY CORTISOL AND URINARY MELATONIN LEVELS”. International Journal of Research and Development in Pharmacy & Life Sciences 3 (2):885-91. https://ijrdpl.com/index.php/ijrdpl/article/view/380.