Thakur, Ramesh, editor
London: Westview Press, 1986,
Buku Referensi
University of California Press, 1947
Buku Teks
chosen by Walter Murdoch and Alan Mulgan
Oxford University Press, 1950
Buku Teks
Barber, Laurie
Century Hutchinson, 1989
Buku Teks
chosen by MacDonald P. Jackson and Vincent O'Sullivan
Oxford University Press, 1983
Buku Teks