APA (7th ed.) Citation

Barnes, H. H. (1961). Floods of September 6, 1960, in eastern Puerto Rico. [U.S. G.P.O.].

Chicago Style (17th ed.) Citation

Barnes, Harry Hawthorne. Floods of September 6, 1960, in Eastern Puerto Rico. Washington: [U.S. G.P.O.], 1961.

MLA (9th ed.) Citation

Barnes, Harry Hawthorne. Floods of September 6, 1960, in Eastern Puerto Rico. [U.S. G.P.O.], 1961.