Nelson, Margaret C. (1979). "Sound production in the cockroach, Gromphadorhina portentosa: The sound-producing apparatus". Journal of Comparative Physiology A. 132: 27–38. doi:10.1007/BF00617729. S2CID45902616.
Nelson, Margaret C. (1979). "Sound production in the cockroach, Gromphadorhina portentosa: The sound-producing apparatus". Journal of Comparative Physiology A. 132: 27–38. doi:10.1007/BF00617729. S2CID45902616.