United States. Department of Agriculture. (1948). Grass: The yearbook of agriculture 1948. U.S. Government Printing.
Citação do estilo Chicago (17ª ed.)United States. Department of Agriculture. Grass: The Yearbook of Agriculture 1948. Washington, D.C.: U.S. Government Printing, 1948.
Citação MLA (9ª ed.)United States. Department of Agriculture. Grass: The Yearbook of Agriculture 1948. U.S. Government Printing, 1948.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.