Twenty years of social pioneering :
the League for Industrial Democracy celebrates its twentieth anniversary, December 30, 1925.
APA Citation
League for Industrial Democracy. (1926). Twenty years of social pioneering: the League for Industrial Democracy celebrates its twentieth anniversary, December 30, 1925. New York City: League for Industrial Democracy.
MLA Citation
League for Industrial Democracy. Twenty Years of Social Pioneering: the League for Industrial Democracy Celebrates Its Twentieth Anniversary, December 30, 1925. New York City: League for Industrial Democracy, 1926.
Warning: These citations may not always be complete (especially for serials).