Nelson, C. (1997). The aura of the cause: A photo album for North American volunteers in the Spanish Civil War. Abraham Lincoln Brigade Archives.
Cita Chicago Style (17a ed.)Nelson, Cary. The Aura of the Cause: A Photo Album for North American Volunteers in the Spanish Civil War. Waltham, Massachusetts: Abraham Lincoln Brigade Archives, 1997.
Cita MLA (9a ed.)Nelson, Cary. The Aura of the Cause: A Photo Album for North American Volunteers in the Spanish Civil War. Abraham Lincoln Brigade Archives, 1997.
Precaución: Estas citas no son 100% exactas.