edited by Statistical Research and Training Institute
Japan Statistical Association, 2004
Buku Referensi
IPSA; AISP, 2009
Multimedia
Finney, D.J.
John Wiley & Sons, 1953
Buku Teks SO
Edwards, Allen L.
Holt, Rinehart and Winston, 1964
Buku Teks
Ferguson, George Andrew
McGraw-Hill , 1989
Buku Teks SO