APA (7th ed.) Citation

Smithsonian Institution. (1919). Cambrian geology and paleontology, IV: No. 5, Middle Cambrian algae. [publisher not identified].

Chicago Style (17th ed.) Citation

Smithsonian Institution. Cambrian Geology and Paleontology, IV: No. 5, Middle Cambrian Algae. [Washington]: [publisher not identified], 1919.

MLA (9th ed.) Citation

Smithsonian Institution. Cambrian Geology and Paleontology, IV: No. 5, Middle Cambrian Algae. [publisher not identified], 1919.

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