Citazione Stile APA (7a Edizione)

Tennessee Valley Authority. Dept. of Agricultural Relations. (1947). Food at the grass roots; the Nation's stake in soil minerals. s.n.

Citazione stile Chigago Style (17a edizione)

Tennessee Valley Authority. Dept. of Agricultural Relations. Food at the Grass Roots; the Nation's Stake in Soil Minerals. Knoxville: s.n, 1947.

Citatione MLA (9a ed.)

Tennessee Valley Authority. Dept. of Agricultural Relations. Food at the Grass Roots; the Nation's Stake in Soil Minerals. s.n, 1947.