http://repository.uhamka.ac.id/id/eprint/14652/
Pengaruh Model Problem Based Learning (PBL) Terhadap Hasil Belajar Pelajaran Siswa Sejarah Di SMA
Prayogi, Yoga
http://repository.uhamka.ac.id/id/eprint/14652/1/FKIP_PENDIDIKAN%20SEJARAH_1601075004_YOGA%20PRAYOGI.pdf