Little, R. J. A., & Rubin, D. B. (2002). Statistical analysis with missing data (Second edition.). John Wiley & Sons, Inc..

Little, Roderick J. A., and Donald B. Rubin. Statistical Analysis with Missing Data. Second edition. Hoboken, New Jersey: John Wiley & Sons, Inc., 2002.

Little, Roderick J. A., and Donald B. Rubin. Statistical Analysis with Missing Data. Second edition. John Wiley & Sons, Inc., 2002.