Weekley, Ernest, author
Dover Publications, 1967
Buku Referensi
Weekley, Ernest, author
Dover Publications, 1967
Buku Referensi
Partridge, Eric, 1894-1979, author
Macmillan, 1959
Buku Referensi
Mayrhofer, Manfred, 1926-, author
Heidenberg , 1956
Buku Referensi
Routledge, 1998
Buku Teks