Creighton, Donald
Macmillan, 1981
Buku Teks
Careless, J.M.S.
Macmillan, 1959
Buku Teks
Careless, J.M.S.
Cambridge University Press, 1953
Buku Teks
Careless, J.M.S.
Macmillan, 1984
Buku Teks
chapters by Edgar McInnis ... [et al.] ; edited by George W. Brown
University of California Press, 1953
Buku Teks