http://repository.uhamka.ac.id/4350/
Samsul Maarif, SMF
http://repository.uhamka.ac.id/4350/1/Nilai%20Akhir%20Prosiding_Adult%20Gesture.pdf
Samsul Maarif, SMF Hasil Peer Reviu Artikel prosiding Berjudul “Adult Gesture in Collaborative Mathematics Reasoning in Different Ages”. UHAMKA. (Unpublished)