United States. Bureau of the Census & Insular Telegraph Bureau, Puerto Rico. (1909). Electrical industries of Porto Rico. U.S. Government Printing Office.
Chicago Style (17th ed.) CitationUnited States. Bureau of the Census and Puerto Rico Insular Telegraph Bureau. Electrical Industries of Porto Rico. Washington: U.S. Government Printing Office, 1909.
MLA (9th ed.) CitationUnited States. Bureau of the Census and Puerto Rico Insular Telegraph Bureau. Electrical Industries of Porto Rico. U.S. Government Printing Office, 1909.
Warning: These citations may not always be 100% accurate.