ISBN 0-521-20272-8* Guilmartin, John Francis,"Galleons and Galleys", Cassell & Co., London, 2002 ISBN 0-304-35263-2* Hattendorf, John B.
ISBN 0-521-20272-8*Guilmartin, John Francis,"Galleons and Galleys", Cassell & Co., London, 2002 ISBN 0-304-35263-2*Hattendorf, John B.