http://repository.uhamka.ac.id/id/eprint/15400/
Kandungan Nilai-Nilai Pendidikan Akhlak Pada Kumpulan Ceramah KH. Abdullah Gymnastiar
Hafizh, Fahd
http://repository.uhamka.ac.id/id/eprint/15400/1/Fai_Pendidikan%20Agama%20Islam_%201207015012_%20Fahd%20Hafizh.pdf