"Heteropsammia cochlea". Corals of the World. Australian Institute of Marine Science. Retrieved 6 February 2019.
doi.org
Ferrero-Vicente, L.M.; Marco-Méndez, C.; Loya-Fernández, A.; Sánchez-Lizaso, J.L. (2014). "Observations on the ecology and reproductive biology of the sipunculan worm Aspidosiphon muelleri in temperate waters". Journal of the Marine Biological Association of the United Kingdom. 84 (8): 1629–1638. doi:10.1017/S0025315414000812. hdl:10045/38455.
handle.net
hdl.handle.net
Ferrero-Vicente, L.M.; Marco-Méndez, C.; Loya-Fernández, A.; Sánchez-Lizaso, J.L. (2014). "Observations on the ecology and reproductive biology of the sipunculan worm Aspidosiphon muelleri in temperate waters". Journal of the Marine Biological Association of the United Kingdom. 84 (8): 1629–1638. doi:10.1017/S0025315414000812. hdl:10045/38455.
M.J. de Kluijver; et al. "Aspidosiphon muelleri". Macrobenthos of the North Sea: Sipuncula. Marine Species Identification Portal. Retrieved 7 February 2019.