International Program of Laboratories for Population Statistics. (1978). A basic demographic questionnaire: Data collection and analyses in sample surveys. International Program of Laboratories for Population Statistics, University of North Carolina at Chapel Hill.
Cita Chicago Style (17a ed.)International Program of Laboratories for Population Statistics. A Basic Demographic Questionnaire: Data Collection and Analyses in Sample Surveys. Chapel Hill: International Program of Laboratories for Population Statistics, University of North Carolina at Chapel Hill, 1978.
Cita MLA (9a ed.)International Program of Laboratories for Population Statistics. A Basic Demographic Questionnaire: Data Collection and Analyses in Sample Surveys. International Program of Laboratories for Population Statistics, University of North Carolina at Chapel Hill, 1978.