United States Office of Experiment Stations, Mead, E., Smythe, W.E., Manson, M., Wilson, J.M., Marx, C.D., Soulé, F., Grunsky, C.E., Boggs, E.M. & Schuyler, J.D. (1901). Report of Irrigation Investigations in California. Government Printing Office. pp. 145–147.{{cite book}}: CS1 maint: multiple names: authors list (link)