Garrett, Mitchell B.
Appleton-Century-Crofts, , 1947
Buku Teks
Rosenkilde and Bagger , 1963
Buku Teks
Dawson, Christopher
Sheed and Ward, 1946
Buku Teks
Davis, H. W. C.
Oxford University Press, 1960
Buku Teks
White, James L., author
Washington Square Press, 1966
Buku Teks