Thorndale, W., & Dollarhide, W. (1997). Map guide to the U.S. federal censuses, 1790-1920 (Paperback ed.). Genealogical Pub. Co..
Cita Chicago Style (17a ed.)Thorndale, William, y William Dollarhide. Map Guide to the U.S. Federal Censuses, 1790-1920. Paperback ed. Baltimore: Genealogical Pub. Co., 1997.
Cita MLA (8a ed.)Thorndale, William, y William Dollarhide. Map Guide to the U.S. Federal Censuses, 1790-1920. Paperback ed. Genealogical Pub. Co., 1997.
Precaución: Estas citas no son 100% exactas.