U.S.Department of Agriculture. (1948). Grass: The yearbook of agriculture 1946. Washington: U.S.Department of Agriculture.
Stile di citazione ChicagoU.S.Department of Agriculture. Grass: The Yearbook of Agriculture 1946. Washington: U.S.Department of Agriculture, 1948.
Citazione MLAU.S.Department of Agriculture. Grass: The Yearbook of Agriculture 1946. Washington: U.S.Department of Agriculture, 1948.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.