M. A. W. , R. Y. , Hari Basuki Notobroto3) , Tran., “Effect Of Climate And Sanitation Of Rats Population And Index Flea As Indicator Detection Yersinia pestis In Port Surabaya”, int.jour.sci.res.mana, vol. 4, no. 8, Aug. 2016, Accessed: Jun. 15, 2025. [Online]. Available: https://ijsrm.net/index.php/ijsrm/article/view/457