League of American Writers. (1938). Writers take sides: Letters about the war in Spain from 418 American authors. The League of American Writers.
Chicago Style (17th ed.) CitationLeague of American Writers. Writers Take Sides: Letters About the War in Spain from 418 American Authors. New York City: The League of American Writers, 1938.
MLA (9th ed.) CitationLeague of American Writers. Writers Take Sides: Letters About the War in Spain from 418 American Authors. The League of American Writers, 1938.
Warning: These citations may not always be 100% accurate.