Symposium on Surface Mining and Reclamation & National Coal Association. Papers presented before the Symposium on Surface Mining and Reclamation. National Coal Association.
Citazione stile Chigago Style (17a edizione)Symposium on Surface Mining and Reclamation e National Coal Association. Papers Presented Before the Symposium on Surface Mining and Reclamation. Washington, DC: National Coal Association.
Citatione MLA (8a ed.)Symposium on Surface Mining and Reclamation e National Coal Association. Papers Presented Before the Symposium on Surface Mining and Reclamation. National Coal Association.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.