Walling, W. E. (1916). The Socialism of to-day: A source-book of the present position and recent development of the socialist and labor parties in all countries, consisting mainly of original documents. H. Holt and Company.
Chicago-referens (17:e uppl.)Walling, William English. The Socialism of To-day: A Source-book of the Present Position and Recent Development of the Socialist and Labor Parties in All Countries, Consisting Mainly of Original Documents. New York: H. Holt and Company, 1916.
MLA-referens (8:e uppl.)Walling, William English. The Socialism of To-day: A Source-book of the Present Position and Recent Development of the Socialist and Labor Parties in All Countries, Consisting Mainly of Original Documents. H. Holt and Company, 1916.
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