Walle, M., & Jennings, N. (2001). Safety & health in small-scale surface mines: A handbook. International Labour Organization.
Style de citation Chicago (17e éd.)Walle, Manfred, et Norman Jennings. Safety & Health in Small-scale Surface Mines: A Handbook. International Labour Organization, 2001.
Style de citation MLA (9e éd.)Walle, Manfred, et Norman Jennings. Safety & Health in Small-scale Surface Mines: A Handbook. International Labour Organization, 2001.
Attention : ces citations peuvent ne pas être correctes à 100%.