Hardy, F. Lane
West Publishing, 1984
Buku Teks
Kovacic, Michael L.
Prindle, Weber and Schmidt , 1971
Buku Teks
Martin, E. Wainright
Illinois: Richard D Irwin, 1969
Buku Teks
Dyke, James Van, 1813-1855, author
Brooks/Cole Cengage Learning, 2012
Buku Teks
Paquette, Gerard A., author
Holbrook Press, 1975
Buku Teks