Não informado. (1969). Memoirs of the Hourglass Cruises. Florida Department of Natural Resources, Marine Research Laboratory.
Chicago-viite (17. p.)Não informado. Memoirs of the Hourglass Cruises. St. Petersburg, Fla: Florida Department of Natural Resources, Marine Research Laboratory, 1969.
MLA-viite (8. p.)Não informado. Memoirs of the Hourglass Cruises. Florida Department of Natural Resources, Marine Research Laboratory, 1969.
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