Gellhorn, Ernest, author
West Publishing Company, 1972
Buku Teks
Davies, Jack, author
West Publishing, 1975
Buku Teks
Scheb, John M., author
Thomson Wadworth, 2005
Buku Teks
Lorch, Robert S., author
Wayne State University Press, 1969
Buku Teks
Robinson, Glen O., author
West Publishing, 1986
Buku Teks