Murray, John Edward, author
Michie, 1990
Buku Teks
Farnsworth, E. Allan, author
Little, Brown, 1990
Buku Teks
Kunz, Christina L., author
West Publishing, 2013
Buku Teks
Schaber, Gordon D., author
West Publishing, 1990
Buku Teks
Hinze, Jimmie W., author
McGraw-Hill, 2011
Buku Teks