Boas, Mary L.
John Wiley & Sons, 1983
Buku Teks
Boas, Mary L., author
John Wiley & Sons, 2006
Buku Teks
Potter Merle. C
Prentice-Hall, 1978
Buku Teks
Saaty, Thomas L., author
McGraw-Hill, 1959
Buku Teks
Bartholomew, David J., author
John Wiley & Sons, 1981
Buku Teks