Sampson, George, author
University Press, 1949
Buku Referensi
edited by Yogita Goyal
Cambridge University Press, 2017
Buku Teks
Sampson, George, author
University Press, 1959
Buku Teks
Sampson, George, author
Cambridge University Press, 1972.
Buku Teks
edited by Malcolm Godden and Michael Lapidge
Cambridge University Press, 1991
Buku Teks