by George C. Atteberry ... [at al.]
Macmillan, 1950
Buku Teks
Charlesworth, M. P., author
Oxford University Press, 1951
Buku Teks
Gibbon, Edward
Random House, 1993
Buku Referensi
editor, Frank N. Magill
Salem Press, 1994
Buku Referensi
editor, Frank N. Magill
Salem Press, 1994
Buku Referensi