Richardson, R. D. (1982). Comintern Army: The international brigades and the Spanish Civil War. The University of Kentucky Press.
Lua i Stíl Chicago (17ú heag.)Richardson, R. Dan. Comintern Army: The International Brigades and the Spanish Civil War. Lexington, Kentucky: The University of Kentucky Press, 1982.
Lua MLA (9ú heag.)Richardson, R. Dan. Comintern Army: The International Brigades and the Spanish Civil War. The University of Kentucky Press, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.