Cita APA (7a ed.)

Yan, D., Liu, H., & Yao, P. (2021). Assessing Energy Efficiency for Economic and Sustainable Development in the Region of European Union Countries. Frontiers Media S.A.

Cita Chicago Style (17a ed.)

Yan, Dong, Hongda Liu, y Pinbo Yao. Assessing Energy Efficiency for Economic and Sustainable Development in the Region of European Union Countries. Frontiers Media S.A, 2021.

Cita MLA (8a ed.)

Yan, Dong, et al. Assessing Energy Efficiency for Economic and Sustainable Development in the Region of European Union Countries. Frontiers Media S.A, 2021.