United States. Census Office. 7th Census, 1850, & Vermont. Public Records Division. (1850). Seventh census of the United States: Original returns of the assistant marshals : fourth series : agricultural production by counties.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)United States. Census Office. 7th Census, 1850, và Vermont. Public Records Division. Seventh Census of the United States: Original Returns of the Assistant Marshals : Fourth Series : Agricultural Production by Counties. 1850.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)United States. Census Office. 7th Census, 1850, và Vermont. Public Records Division. Seventh Census of the United States: Original Returns of the Assistant Marshals : Fourth Series : Agricultural Production by Counties. 1850.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.