Peck, Roxy., author
Cebgage Learning, 2016
Buku Teks
Sigel, Andrew F., author
John Wiley & Sons, 1996
Buku Teks
Robert, Harry V., author
McGraw-Hill, 1982
Buku Teks
Mosteller, Frederick, author
Addison Wesley Publ., 1983
Buku Teks
Devore, Jay L..
Duxbury Press, 1995
Buku Teks