APA
Ruff F.Paul, . (1961). An investigation to determine the effectiveness of a chemical additive for reducing seepage in the south canal. United State: United States Bureau of Reclamation Boulder City Nevada Salt River Valley Water Users' Association Phoenix Arizona.
Chicago
Ruff F.Paul, . 1961. An investigation to determine the effectiveness of a chemical additive for reducing seepage in the south canal. United State: United States Bureau of Reclamation Boulder City Nevada Salt River Valley Water Users' Association Phoenix Arizona.
Harvard
Ruff F.Paul, . (1961). An investigation to determine the effectiveness of a chemical additive for reducing seepage in the south canal. United State: United States Bureau of Reclamation Boulder City Nevada Salt River Valley Water Users' Association Phoenix Arizona.
MLA
Ruff F.Paul, . An investigation to determine the effectiveness of a chemical additive for reducing seepage in the south canal. United State: United States Bureau of Reclamation Boulder City Nevada Salt River Valley Water Users' Association Phoenix Arizona. 1961.