APA (7th ed.) Citation

Poor, L. S. o. t. (1939). A Century In the Service of the Aged Poor, 1839-1939, Congregation of the Little Sisters of the Poor. S.I..

Chicago Style (17th ed.) Citation

Poor, Little Sisters of the. A Century In the Service of the Aged Poor, 1839-1939, Congregation of the Little Sisters of the Poor. S.I., 1939.

MLA (8th ed.) Citation

Poor, Little Sisters of the. A Century In the Service of the Aged Poor, 1839-1939, Congregation of the Little Sisters of the Poor. S.I., 1939.