Walls, J. G. (1982). Encyclopedia of marine invertebrates. IFH Publications.
Chicago Style (17th ed.) CitationWalls, Jerry G. Encyclopedia of Marine Invertebrates. Neptune City, New Jersey: IFH Publications, 1982.
MLA (9th ed.) CitationWalls, Jerry G. Encyclopedia of Marine Invertebrates. IFH Publications, 1982.
Warning: These citations may not always be 100% accurate.