United States. Department of Commerce. (1930). British exports of electrical apparatus. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Commerce. British Exports of Electrical Apparatus. [Washington]: GPO, 1930.
MLA (9th ed.) CitationUnited States. Department of Commerce. British Exports of Electrical Apparatus. GPO, 1930.
Warning: These citations may not always be 100% accurate.