Walker, J., & Saunders, M. (1992). Avalanches and landslides. Gloucester Press.
Cita Chicago Style (17a ed.)Walker, Jane, y Mike Saunders. Avalanches and Landslides. New York: Gloucester Press, 1992.
Cita MLA (8a ed.)Walker, Jane, y Mike Saunders. Avalanches and Landslides. Gloucester Press, 1992.
Precaución: Estas citas no son 100% exactas.