APA
U.S. Department of Agriculture, . (1967). Stock of grain oil seeds and hay. Washington, D.C: U.S. Department of Agriculture.
Chicago
U.S. Department of Agriculture, . 1967. Stock of grain oil seeds and hay. Washington, D.C: U.S. Department of Agriculture.
Harvard
U.S. Department of Agriculture, . (1967). Stock of grain oil seeds and hay. Washington, D.C: U.S. Department of Agriculture.
MLA
U.S. Department of Agriculture, . Stock of grain oil seeds and hay. Washington, D.C: U.S. Department of Agriculture. 1967.