Adams, Henry, author
Prentice-Hall, 1963
Buku Teks
Adams, Henry
The Library of America, 1986
Buku Teks
Kemmerer, Donald L., author
Littlefield, Adams, 1956
Buku Teks
Rae, John B.
Mc Graw-Hill Book Company, 1949
Buku Teks
Risjord, Norman K., author
Prentice-Hall, 1985
Buku Teks