Frenz, W., & Preuße, A. Yearbook of Sustainable Smart Mining and Energy 2021: Technical, Economic and Legal Framework. Springer International Publishing.
Citazione stile Chigago Style (17a edizione)Frenz, Walter, e Axel Preuße. Yearbook of Sustainable Smart Mining and Energy 2021: Technical, Economic and Legal Framework. Cham: Springer International Publishing.
Citatione MLA (8a ed.)Frenz, Walter, e Axel Preuße. Yearbook of Sustainable Smart Mining and Energy 2021: Technical, Economic and Legal Framework. Springer International Publishing.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.