ULFAH, Aulia Hermawati; SUPAHAR. Polytomous items analysis with gpcm model on development of science process skills performance assessment in biology subject. Biosfer: Jurnal Pendidikan Biologi, [S. l.], v. 18, n. 2, p. 437–452, 2025. DOI: 10.21009/biosferjpb.53403. Disponível em: https://journal.unj.ac.id/unj/index.php/biosfer/article/view/53403. Acesso em: 26 may. 2026.