Williams, E. H.; Mignucci-Giannoni, A. A.; Bunkley-Williams, L.; Bonde, R. K.; Self-Sullivan, C.; Preen, A.; Cockcroft, V. G. (2003). "Echeneid-sirenian associations, with information on sharksucker diet" (in en). Journal of Fish Biology63 (5): 1176–1183. doi:10.1046/j.1095-8649.2003.00236.x. பன்னாட்டுத் தர தொடர் எண்:0022-1112.
Williams, E. H.; Mignucci-Giannoni, A. A.; Bunkley-Williams, L.; Bonde, R. K.; Self-Sullivan, C.; Preen, A.; Cockcroft, V. G. (2003). "Echeneid-sirenian associations, with information on sharksucker diet" (in en). Journal of Fish Biology63 (5): 1176–1183. doi:10.1046/j.1095-8649.2003.00236.x. பன்னாட்டுத் தர தொடர் எண்:0022-1112.