http://repository.uhamka.ac.id/id/eprint/14510/
2.edukatif
Zulherman, Zulherman
http://repository.uhamka.ac.id/id/eprint/14510/1/2.edukatif%20ok.pdf
Jurnal Ekonomi
http://repository.uhamka.ac.id/id/eprint/14510/
2.edukatif
Zulherman, Zulherman
http://repository.uhamka.ac.id/id/eprint/14510/1/2.edukatif%20ok.pdf