Daniels, Farrington, author
John Wiley & Sons, 1966
Buku Teks
Bromberg, J. Philip, author
Allyn and Bacon, 1980
Buku Teks
Engel, Thomas, author
Pearson Prentice Hall, 2008
Buku Teks
Hill, John William, 1933-, author
Prentice-Hall, 1999
Buku Teks
Palmer, W.G., author
University Press, 1954
Buku Teks