relation: http://repository.uhamka.ac.id/id/eprint/22352/ title: up 15 creator: YATI, KORI subject: Q Science (General) type: Article type: PeerReviewed format: text language: en identifier: http://repository.uhamka.ac.id/id/eprint/22352/1/UP-upload%20ok.pdf identifier: YATI, KORI up 15. up.