http://repository.uhamka.ac.id/4343/
Samsul Maarif, SMF
http://repository.uhamka.ac.id/4343/1/Nilai%20Akhir%20Sinta%202_Implementation%20Self%20Explanation.pdf
Samsul Maarif, SMF Hasil Peer Reviu Artikel Jurnal Berjudul “The implementation of self-explanation strategy to develop understanding proof in geometry”. UHAMKA. (Unpublished)