(1948). Grass: The yearbook of agriculture, 1948. Washington: United States Department of Agriculture.
Citación estilo ChicagoGrass: The Yearbook of Agriculture, 1948. Washington: United States Department of Agriculture, 1948.
Cita MLAGrass: The Yearbook of Agriculture, 1948. Washington: United States Department of Agriculture, 1948.
Precaución: Estas citas no son 100% exactas.