APA (7th ed.) Citation

Smithsonian Institution. (1911). Cambrian geology and paleontology, II: No. 3, Middle Cambrian Holothurians and Medusae. [publisher not identified].

Chicago Style (17th ed.) Citation

Smithsonian Institution. Cambrian Geology and Paleontology, II: No. 3, Middle Cambrian Holothurians and Medusae. [Washington]: [publisher not identified], 1911.

MLA (9th ed.) Citation

Smithsonian Institution. Cambrian Geology and Paleontology, II: No. 3, Middle Cambrian Holothurians and Medusae. [publisher not identified], 1911.

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