Wheeler, Marcus, author
Glarendon Press, 1984
Buku Referensi
edited by Catherine Soanes and Angus Stevenson
Oxford University Press, 2006
Buku Referensi
edited by Mitford M. Mathews
The University of Chicago Press, 1956
Buku Referensi
edited by John Eatwell, Murray Milgate and Peter Newman
Macmillan, 1988
Buku Referensi
edited by. Barry Kernfeld
Macmillan, 1998
Buku Referensi