APA
U S Commerce (Department of-) Census (Bureau of-), U S Commerce (Department of-) Census (Bureau of-), . (1951). Statistical abstract of the United States 1951. Washington: U S.
Chicago
U S Commerce (Department of-) Census (Bureau of-), U S Commerce (Department of-) Census (Bureau of-), . 1951. Statistical abstract of the United States 1951. Washington: U S.
Harvard
U S Commerce (Department of-) Census (Bureau of-), U S Commerce (Department of-) Census (Bureau of-), . (1951). Statistical abstract of the United States 1951. Washington: U S.
MLA
U S Commerce (Department of-) Census (Bureau of-), U S Commerce (Department of-) Census (Bureau of-), . Statistical abstract of the United States 1951. Washington: U S. 1951.