Lesmana, G., 		Piarsa, I., & 		Putra, I.
2021 May 19.  Identification of Baby's Feet Using Principal Component Analysis (PCA) Method Character Extraction with K-Nearest Neighbor (KNN) Classification in Matlab Application. Jurnal Ilmiah Merpati (Menara Penelitian Akademika Teknologi Informasi). [Online] 9:3