Tim Beechie, John S. Richardson, Angela M. Gurnell, and Junjiro Negishi (2012) "Watershed processes, human impacts, and process-based restoration."
Tim Beechie, John S. Richardson, Angela M. Gurnell, dan Junjiro Negishi (2012) "Proses daerah aliran sungai, dampak manusia, dan pemulihan berbasis proses."