United States. Bureau of the Census & Delaware. Public Archives Commission. (2004). United States Census, State of Delaware: Agriculture schedules. Delaware Public Archives.
Chicago-referens (17:e uppl.)United States. Bureau of the Census och Delaware. Public Archives Commission. United States Census, State of Delaware: Agriculture Schedules. [Dover, Del.: Delaware Public Archives, 2004.
MLA-referens (8:e uppl.)United States. Bureau of the Census och Delaware. Public Archives Commission. United States Census, State of Delaware: Agriculture Schedules. Delaware Public Archives, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.