(1961). Seeds: The yearbook of griculture 1961. Washington: The United State Department of Agriculture.
Style de citation ChicagoSeeds: The Yearbook of Griculture 1961. Washington: The United State Department of Agriculture, 1961.
Style de citation MLASeeds: The Yearbook of Griculture 1961. Washington: The United State Department of Agriculture, 1961.
Attention : ces citations peuvent ne pas être correctes à 100%.