Não informado. (1941). Fishery Bulletin of the Fish and Wildlife Service. U.S. Fish and Wildlife Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Fishery Bulletin of the Fish and Wildlife Service. Washington: U.S. Fish and Wildlife Service, 1941.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Fishery Bulletin of the Fish and Wildlife Service. U.S. Fish and Wildlife Service, 1941.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.