Hamdana, Amirullah, Supardy and Nursamsi (2023) “The Relationship Between Knowledge About The Immunity System And Behaviours Of Maintaining Immunity In Nurses During The Covid-19 Pandemic”, Comprehensive Health Care, 7(1), pp. 1- 8. Available at: http://www.ojs.stikespanritahusada.ac.id/index.php/chc/article/view/77 (Accessed: 27August2025).