APA (7th ed.) Citation

Smithsonian Institution. Office of the Secretary & Clarke, F. W. (1910). Preliminary study of chemical denudation. [publisher not identified].

Chicago Style (17th ed.) Citation

Smithsonian Institution. Office of the Secretary and Frank Wigglesworth Clarke. Preliminary Study of Chemical Denudation. Washington, D.C.: [publisher not identified], 1910.

MLA (9th ed.) Citation

Smithsonian Institution. Office of the Secretary and Frank Wigglesworth Clarke. Preliminary Study of Chemical Denudation. [publisher not identified], 1910.