Williams, Frederick
Harcourt Brace Jovanovich College Publishers, 1992
Buku Teks
Williams, Frederich
Wadworth , 1987
Buku Teks
revised by Benjamin Perles and Charles Sullivan
Prentice-Hall, 1979
Buku Teks
Mosteller, Frederick, author
Addison Wesley Publ., 1983
Buku Teks
NEJM Books, 1986
Buku Teks