Sears, Francis W. (Francis Weston), 1898-1975, author
Addison- Wesley, 1950
Buku Teks
Anderson, Dale A. (Dale Arden), 1936-, author
McGraw-Hill, 1984
Buku Teks
Raitt, Gordon, author
Cambridge University Press, 1992
Buku Teks
Sorensen, Robert M., author
John Wiley & Sons, 1993
Buku Teks
Christman, J. Richard, author
John Wiley & Sons, 1982
Buku Teks