Musyaddad A, Suyanto S. Evoking the four dimensions of student knowledge in ecosystem: effectiveness of real object, web, and blended learning. Biosfer [Internet]. 2019 Nov. 17 [cited 2024 Nov. 5];12(2):194-210. Available from: https://journal.unj.ac.id/unj/index.php/biosfer/article/view/12161