Bulmer, M. (1979). Censuses, surveys, and privacy. Holmes & Meier Publishers.
Cita Chicago (17th ed.)Bulmer, Martin. Censuses, Surveys, and Privacy. New York: Holmes & Meier Publishers, 1979.
Cita MLA (8th ed.)Bulmer, Martin. Censuses, Surveys, and Privacy. Holmes & Meier Publishers, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.