Rokhim, Saiku. “Lighting Intensity Analysis in The Biology Practicum Room at The Integrated Laboratory of UIN Sunan Ampel Surabaya”. International Conference on Sustainable Health Promotion 10 (October 9, 2018): 60-65. Accessed November 27, 2020. http://proceedings.uinsby.ac.id/index.php/ICOSHPRO/article/view/15.