Europa Publications Limited
Europa Publications Limited, 1979
Buku Referensi
Iannone, A. Pablo, author
Routledge, 2001
Buku Referensi
edited by John Bowker
Oxford University Press, 1997
Buku Referensi
edited by Joseph T. Shipley
Writer Publisher, 1979
Buku Referensi
edited by Clarence L. Barnhart and Robert K. Barnhart
World Book-Childcraft International, 1978
Buku Referensi