Não informado. (1919). Fishery investigations. Ministry of Agriculture and Fisheries.
Chicago-referens (17:e uppl.)Não informado. Fishery Investigations. London: Ministry of Agriculture and Fisheries, 1919.
MLA-referens (8:e uppl.)Não informado. Fishery Investigations. Ministry of Agriculture and Fisheries, 1919.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.