Feifarek, Brian P. (1987). "Spines and epibionts as antipredator defenses in the thorny oyster Spondylus americanus Hermann". Journal of Experimental Marine Biology and Ecology. 105 (1): 39–56. doi:10.1016/S0022-0981(87)80028-X. ISSN0022-0981.
Feifarek, Brian P. (1987). "Spines and epibionts as antipredator defenses in the thorny oyster Spondylus americanus Hermann". Journal of Experimental Marine Biology and Ecology. 105 (1): 39–56. doi:10.1016/S0022-0981(87)80028-X. ISSN0022-0981.