@article{202107.0697,
	doi = {},
	url = {https://doi.org/},
	year = 2021,
	month = {July},
	publisher = {Preprints},
	author = {Chin-Sung Chen and Jing-Wen Lin},
	title = {An Action Research on the Long-term Implementation of an Engineering-centered PjBL of Sustainable Energy in a Rural Middle School},
	journal = {Preprints}
}