Levin, Richard I., author
Prentice-Hall, 1998
Buku Teks
Haber, Audrey, author
Addison-Wesley , 1971
Buku Teks
Fraser, D.A.S., author
John Wiley & Sons, 1967
Buku Teks
Tippett, L.H.C., author
Williams and Norgate, 1952
Buku Teks
Yamane, Taro, author
New York University, 1967
Buku Teks