Herrick, James A., author
Pearson custom, 1998
Buku Teks
editor in chief Richard Cavendish
New York Marshall Cavendish 1983
Buku Referensi
Holmes Jr, Oliver Wendell
Little, Brown and Company, 1923
Buku Teks
Holmes, Oliver Wendell
Little, Brown & Co., 1963
Buku Teks
Holmes, Oliver Wendell
Little, Brown & Co., 1951
Buku Klasik