Não informado. Report of the United States Bureau of Commercial Fisheries. U.S. Fish and Wildlife Service.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Report of the United States Bureau of Commercial Fisheries. Washington: U.S. Fish and Wildlife Service.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Report of the United States Bureau of Commercial Fisheries. U.S. Fish and Wildlife Service.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.