American Library Association ALA. (1914). Descriptive catalog of the American Library Association exhibit of labor-saving devices and library equipment, held at the Public Library of the District of Columbia, Washington, D. C., May 25-29, 1914.
Lua i Stíl Chicago (17ú heag.)American Library Association ALA. Descriptive Catalog of the American Library Association Exhibit of Labor-saving Devices and Library Equipment, Held at the Public Library of the District of Columbia, Washington, D. C., May 25-29, 1914. Washington, D. C, 1914.
Lua MLA (9ú heag.)American Library Association ALA. Descriptive Catalog of the American Library Association Exhibit of Labor-saving Devices and Library Equipment, Held at the Public Library of the District of Columbia, Washington, D. C., May 25-29, 1914. 1914.