APA
UNITED STATES A. (. O. )., . (1947). Science in farming : The yearbook of agriculture, 1943-1947. : United States Department of Agriculture, Washington.
Chicago
UNITED STATES AGRICULTURE (DEPARTMENT OF ), . 1947. Science in farming : The yearbook of agriculture, 1943-1947. : United States Department of Agriculture, Washington.
Harvard
UNITED STATES A. (. O. )., . (1947). Science in farming : The yearbook of agriculture, 1943-1947. : United States Department of Agriculture, Washington.
MLA
UNITED STATES AGRICULTURE (DEPARTMENT OF ), . Science in farming : The yearbook of agriculture, 1943-1947. : United States Department of Agriculture, Washington. 1947.