Moore, Peter G., author
Longman , 1972
Buku Teks
Berger, James O., author
Springer-Verlag, 1985
Buku Teks
Hymans, Saul H., author
Prentice-Hall, 1967
Buku Teks
Hastings, N.A.J., author
John Wiley & Sons, 1978
Buku Teks
Chernoff, Herman
John Wiley & Sons, 1959
Buku Teks