(1939). The world over: 1938: A chronological and interpretive survey of the year of tension. Harrison-Hilton Books.
Chicago-referens (17:e uppl.)The World over: 1938: A Chronological and Interpretive Survey of the Year of Tension. New York: Harrison-Hilton Books, 1939.
MLA-referens (8:e uppl.)The World over: 1938: A Chronological and Interpretive Survey of the Year of Tension. Harrison-Hilton Books, 1939.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.