Pangestika, Rismawati
UHAMKA
http://repository.uhamka.ac.id/id/eprint/10104/1/Analisis%20Kualitas%20Lingkungan%204E-signed.pdf
Pangestika, Rismawati
UHAMKA
http://repository.uhamka.ac.id/id/eprint/10104/1/Analisis%20Kualitas%20Lingkungan%204E-signed.pdf