The electoral register :
Practical information for use when drawing samples, both for interview and postal surveys.
APA Citation
Gray, S., Great Britain. Office of Population Censuses and Surveys. Social Survey Division. (1971). The electoral register: Practical information for use when drawing samples, both for interview and postal surveys. London: Office of Population Censuses and Surveys.
MLA Citation
Gray, Sheila, and Great Britain. Office of Population Censuses and Surveys. Social Survey Division. The Electoral Register: Practical Information for Use When Drawing Samples, Both for Interview And Postal Surveys. London: Office of Population Censuses and Surveys, 1971.
Warning: These citations may not always be complete (especially for serials).