Friday, L. E. (1988). A key to the adults of British water beetles. χ.τ.: Field Studies Council.
Chicago Style CitationFriday, L. E. A Key to the Adults of British Water Beetles. χ.τ.: Field Studies Council, 1988.
MLA CitationFriday, L. E. A Key to the Adults of British Water Beetles. χ.τ.: Field Studies Council, 1988.
Warning: These citations may not always be 100% accurate.