Hinkle, Rollland Theodore
John Wiley & Sons, 1960
Buku Teks
Church, Austin H., author
John Wiley & Sons, 1950
Buku Teks
Singh, Balbir
Vikas Publishing House, 1982
Buku Teks
Ullman, David G., 1944-, author
McGraw-Hill, 2010
Buku Teks
Wilson, Charles E., author
Harper and Row, 1983
Buku Teks