(1957). Farm woodland, 1954 / United States Department of Commerce, Bureau of the Census ; prepared by the Geography Division in cooperation with the Agriculture Division.
Chicago-referens (17:e uppl.)Farm Woodland, 1954 / United States Department of Commerce, Bureau of the Census ; Prepared by the Geography Division in Cooperation with the Agriculture Division. 1957.
MLA-referens (9:e uppl.)Farm Woodland, 1954 / United States Department of Commerce, Bureau of the Census ; Prepared by the Geography Division in Cooperation with the Agriculture Division. 1957.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.