Lansing, J. B., Ginsburg, G. P., & Braaten, K. (1961). An investigation of response error. Bureau of Economic and Business Research, University of Illinois.
Cita Chicago (17th ed.)Lansing, John B., Gerald P. Ginsburg, i Kaisa Braaten. An Investigation of Response Error. Urbana: Bureau of Economic and Business Research, University of Illinois, 1961.
Cita MLA (9th ed.)Lansing, John B., et al. An Investigation of Response Error. Bureau of Economic and Business Research, University of Illinois, 1961.
Atenció: Aquestes cites poden no estar 100% correctes.