Keir, David Lindsay
Oxford University Press, 1948
Buku Teks
Keir, David Lindsay
Clarendon Press, 1967
Buku Teks
Barrett, Edward L.
Foundation Press, 1977
Buku Teks
Keir, David Lindsay
Oxford, 1959
Buku Teks
Kauper, Paul G.
Little, Brown, 1966
Buku Teks