Prawira, A. Y., W. R. Farida, H. S. Darusman, S. Novelina, and S. Agungpriyono. “Vitamin E (Alpha Tocopherol) Level in the Dorsal Skin of Sunda Porcupine (Hystrix Javanica)”. Jurnal Riset Veteriner Indonesia (Journal of The Indonesian Veterinary Research), vol. 2, no. 2, Sept. 2018, doi:10.20956/jrvi.v2i2.4836.