31
Ibidem.
32
Ibidem.
33
Wader Oceanografic Program, Ocean Acoustic Developments Ltd., Cornwall, UK
34
Hoja de servicios del Jefe de Escuadra don Ángel Laborde. Archivo Museo Álvaro de Bazán, legajo 620/596.
35
Africa Pilot, vol. I, Admiralty Hydrographic Office, Taunton, Somerset, UK
36
Africa Pilot, vol. III, Admiralty Hydrographic Office, Taunton, Somerset, UK
37
Africa Pilot, vol. II, Admiralty Hydrographic Office, Taunton, Somerset, UK