United States. Bureau of Foreign and Domestic Commerce. (1924). Nitrogen survey: Part III. Air-nitrogen processes. GPO.
Chicago Style (17th ed.) CitationUnited States. Bureau of Foreign and Domestic Commerce. Nitrogen Survey: Part III. Air-nitrogen Processes. [Washington]: GPO, 1924.
MLA (9th ed.) CitationUnited States. Bureau of Foreign and Domestic Commerce. Nitrogen Survey: Part III. Air-nitrogen Processes. GPO, 1924.
Warning: These citations may not always be 100% accurate.