Huntington, Samuel P.
The Belknap Press, 1981
Buku Teks
Blair, Walter
Chandler, 1960
Buku Teks
Hacker, Louis M.
D. Van Nostrand, 1957
Buku Teks
Grande, Sandy, 1964-
Rowman and Littlefield, 2015
Buku Teks
Ciardi, John
Harper & Row , 1980
Buku Referensi