Healey, Joseph F., 1945-
Statistics : a tool for social research
Cengage Learning, 2015
 Buku Teks
Healey, Joseph F., 1945-
Statistics : a tool for social research
Wadsworth, 1996
 Buku Teks
Healey, Joseph F., 1945-
Statistics : a tool for social research
Wadsworth and Cengage Learning, 2012
 Buku Teks
Klugh, Henry E.
Statistics : the essentials for research
John Wiley & Sons, 1974
 Buku Teks
Levin, Jack
Elementary statistics in social research
Harper & Row, 1973
 Buku Teks