BolaSport. https://www.bolasport.com/read/311926608/kronologi-meninggalnya-istri-ilija-spasojevic-sakit-paru-paru-hingga-dimakamkan-di-jakarta
Diakses pada 21 November 2019Healthline. https://www.healthline.com/health/symptoms-of-lung-infection#causes
Diakses pada 21 November 2019Medical News Today. https://www.medicalnewstoday.com/articles/8888.php
Diakses pada 21 November 2019Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/pneumonia/symptoms-causes/syc-20354204
Diakses pada 21 November 2019