Funk & Wagnalls, 1983
Buku Referensi
edited by Hyder Edward Rollins
J.B. Lippincott, 1944
Buku Teks
edited by John Eatwell, Murray Milgate and Peter Newman
Macmillan, 1988
Buku Referensi
edited by. Barry Kernfeld
Macmillan, 1998
Buku Referensi
H.S. Stuttman , 1989
Buku Referensi