APA (7th ed.) Citation

Great Britain. General Register Office. (1961). Why a census? H.M.S.O..

Chicago Style (17th ed.) Citation

Great Britain. General Register Office. Why a Census? London: H.M.S.O., 1961.

MLA (9th ed.) Citation

Great Britain. General Register Office. Why a Census? H.M.S.O., 1961.

Warning: These citations may not always be 100% accurate.