International Symposium Continuous Surface Mining Aachen, Germany, SpringerLink (Online service), & Niemann-Delius, C. (2015). Proceedings of the 12th International Symposium Continuous Surface Mining: Aachen 2014. Springer International Publishing. https://doi.org/10.1007/978-3-319-12301-1
Cita Chicago (17th ed.)International Symposium Continuous Surface Mining Aachen, Germany, SpringerLink (Online service), i Christian Niemann-Delius. Proceedings of the 12th International Symposium Continuous Surface Mining: Aachen 2014. Cham: Springer International Publishing, 2015. https://doi.org/10.1007/978-3-319-12301-1.
Cita MLA (9th ed.)International Symposium Continuous Surface Mining Aachen, Germany, et al. Proceedings of the 12th International Symposium Continuous Surface Mining: Aachen 2014. Springer International Publishing, 2015. https://doi.org/10.1007/978-3-319-12301-1.