APA Style
Nuraida, D. et al (2020).
Scaffolding as a strategy to help student difficulties in proving group problems .
Tuban:
Unirow.
MLA Style
Nuraida, Dede. et al.
"Scaffolding as a strategy to help student difficulties in proving group problems".
Tuban:
Unirow,
2020.
Buku PGSD.