Statistical analysis with missing data 
Little, Roderick J.A. 
 - Third edition. 
 -  John Wiley & Sons, Inc.  2020 
 - xii, 449 page 
978-0-470-52679-8
Mathematical statistics.
GS 519.5 L7781 2020
                        978-0-470-52679-8
Mathematical statistics.
GS 519.5 L7781 2020