A JOURNAL OF SOCIAL SECURITY RESEARCH
POLITY AND PRACTICE ISSUE 5 SEPTEMBER/OCTOBER 19921992 年出版56 页ISBN:09627898
Basic Statistics In Business and Economics Fourth Edition
George W.Summers1985 年出版0 页ISBN:
UNDERSTANDING AND USING STATISTICS:BASIC CONCEPTS SECOND EDITION
MARTY J.SCHMIDT1979 年出版498 页ISBN:0669022705