Johnson, Robert
Elementary statistics
PWS-Kent, 1984
Buku Teks
Erricker, B.C.
Elementary statistics
Hodder and Stoughton, 1981
Buku Teks
Freund, John E.
Modern elementary statistics
Pearson Prentice Hall, 2007
Buku Teks
Freund, John E.
Modern elementary statistics
Prentice-Hall, 1980
Buku Teks
Freund, John E.
Modern elementary statistics
Prentice-Hall, 1984
Buku Teks