McMurtrie, D. C. (1940). The service of printing to civilization since its invention in 1440 by Johann Gutenberg: A radio talk over station WKRC, Cincinnati, Ohio, April 11, 1940.
Chicago Style (17th ed.) CitationMcMurtrie, Douglas C. The Service of Printing to Civilization Since Its Invention in 1440 by Johann Gutenberg: A Radio Talk over Station WKRC, Cincinnati, Ohio, April 11, 1940. Cincinnati, 1940.
MLA (8th ed.) CitationMcMurtrie, Douglas C. The Service of Printing to Civilization Since Its Invention in 1440 by Johann Gutenberg: A Radio Talk over Station WKRC, Cincinnati, Ohio, April 11, 1940. 1940.
Warning: These citations may not always be 100% accurate.