Kurniawan, F., 		Tjandrawinata, R., 		Marpaung, C., 		Pratiwi, D., & 		Komariah, K.
(2022).
 The Effect of Horn Beetle Nanochitosan (Xylotrupes gideon) Addition on The Hardness of Glass-ionomer Cement.
<em>Journal Of  Indonesian Dental Association, 5</em>(1), 27-31.
doi:10.32793/jida.v5i1.719