Galli, Mirko, author
Birkhauser , 2000
Buku Teks
Hockett, Homer Carey
Macmillan, 1963
Buku Teks
Lichtheim, George
Routledge & Kegan Paul, 1964
Buku Teks
Macaulay, T.B. (Thomas Babington), author
Aldine-House, 1951
Buku Teks
McDowell, W. H., author
Longman, 2002
Buku Teks