Moran, John Jude, author
Prentice-Hall, 2002
Buku Teks
Miller, Roger LeRoy, author
Thomson West, 2007
Buku Teks
Lavine, Abraham Lincoln
Prentice-Hall, 1963
Buku Teks
Breyer, Stephen G., 1938-, author
Little, Brown, 1982
Buku Teks
Breyer, Stephen G., 1938-, author
Little, Brown and Company, 1979
Buku Teks