Hughes, N. C. (1994). Ontogeny, intraspecific variation, and systematic of the Late Cambrian Trilobite Dikelocephalus. [S.l.]: Washington : Smithsonian Institution Press.
Chicago Style CitationHughes, Nigel C. Ontogeny, Intraspecific Variation, and Systematic of the Late Cambrian Trilobite Dikelocephalus. [S.l.]: Washington : Smithsonian Institution Press, 1994.
MLA CitationHughes, Nigel C. Ontogeny, Intraspecific Variation, and Systematic of the Late Cambrian Trilobite Dikelocephalus. [S.l.]: Washington : Smithsonian Institution Press, 1994.
Warning: These citations may not always be 100% accurate.