Koban, G. H. S., S. Linuwih, and E. Purwanti. “The Implementation of Project-Based Learning Model Based on Local Food Potency in Developing Entrepreneurship Attitude of Primary School Students”. Journal of Primary Education, Vol. 8, no. 4, Jan. 2019, pp. 33-41, https://journal.unnes.ac.id/sju/jpe/article/view/28239.