Thurtone, L.L., author
Macmillan, 1925
Buku Teks
Neter, John, author
Allyn & Bocon, 1956
Buku Teks
Guilford, J. P. (Joy Paul), 1897-1987, author
McGraw-Hill, 1987
Buku Teks
McClave, James T., author
Dellen Publishing, 1979
Buku Teks
Hays, William L., author
Harcourt Brace Colege, 1994
Buku Teks