Reference

J. Gong, Weibo Song (2004): Morphology and infraciliature of two marine species of Hartmannula (Protozoa, Ciliophora, Cyrtophorida), from scallop-farming waters off Qingdao (Tsingtao), China – Journal of Natural History. Ersetzt: Annals and Magazine of Natural History, including Zoology, Botany and Geology. – 38: 1327 - 1337.