Kauper, Paul G., author
Little, Brown, 1971
Buku Teks
Keir, D. L. (David Lindsay), author
Oxford University Press, 1948
Buku Teks
Keir, D. L. (David Lindsay), author
Clarendon Press, 1967
Buku Teks
Barrett, Edward L., author
Foundation Press, 1977
Buku Teks
Keir, D. L. (David Lindsay), author
Oxford, 1959
Buku Teks