Hawthorn, H. P. M.Y. "Adverturess" R.Y.S: Southampton to Canary Islands, Rio de Oro, Gambia, Senegal, Mauretania, Madeira and Portugal. January 25th to March 29th, 1925.
Chicago-viite (17. p.)Hawthorn, H. P. M.Y. "Adverturess" R.Y.S: Southampton to Canary Islands, Rio De Oro, Gambia, Senegal, Mauretania, Madeira and Portugal. January 25th to March 29th, 1925. [n.p.
MLA-viite (8. p.)Hawthorn, H. P. M.Y. "Adverturess" R.Y.S: Southampton to Canary Islands, Rio De Oro, Gambia, Senegal, Mauretania, Madeira and Portugal. January 25th to March 29th, 1925.
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