APA (7th ed.) Citation

Smithsonian Institution. (1916). Cambrian geology and paleontology, III: No. 3, Cambrian trilobites. [publisher not identified].

Chicago Style (17th ed.) Citation

Smithsonian Institution. Cambrian Geology and Paleontology, III: No. 3, Cambrian Trilobites. [Washington]: [publisher not identified], 1916.

MLA (9th ed.) Citation

Smithsonian Institution. Cambrian Geology and Paleontology, III: No. 3, Cambrian Trilobites. [publisher not identified], 1916.

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