APA (7th ed.) Citation

(1942). Fifth contribution to nomenclature of Cambrian fossils. [s.n.].

Chicago Style (17th ed.) Citation

Fifth Contribution to Nomenclature of Cambrian Fossils. [Washington]: [s.n.], 1942.

MLA (9th ed.) Citation

Fifth Contribution to Nomenclature of Cambrian Fossils. [s.n.], 1942.

Warning: These citations may not always be 100% accurate.