门 (生物)Biology. Holt, Rinehart, and Winston, USA. (pp. 725) Hodda, M. Phylum Nematoda Cobb, 1932. In: Zhang, Z.-Q. (Ed.) Animal biodiversity: An outline of higher-level
生物分类学The kingdoms of organisms. Quarterly Review of Biology. 1938, 13: 383–420. doi:10.1086/394568. Whittaker, R. H. New concepts of kingdoms of organisms.