APA (7th ed.) Citation

Smithsonian Institution. (1929). Circular in regard to minerals needed to complete mineralogical series in national collections. GPO.

Chicago Style (17th ed.) Citation

Smithsonian Institution. Circular in Regard to Minerals Needed to Complete Mineralogical Series in National Collections. [Washington]: GPO, 1929.

MLA (9th ed.) Citation

Smithsonian Institution. Circular in Regard to Minerals Needed to Complete Mineralogical Series in National Collections. GPO, 1929.

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