Conover, W.J., author
John Wiley and Sons, 1980
Buku Teks
Conover, W.J.
John Wiley and Sons, 1999
Buku Teks
Randles, Ronald H.
John Wiley and Sons, 1979
Buku Teks
Daniel, Wayne W., author
Gramedia , 1989
Buku Teks
Siebert, Carl F., author
Oxford University Press, 2018
Buku Teks