Esquerra
The Book of the XV Brigade : records of British, American, Canadian and Irish Volunteers in the XV International British in Spain : 1936-1938
Dreta

The Book of the XV Brigade : records of British, American, Canadian and Irish Volunteers in the XV International British in Spain : 1936-1938 [The]. Madrid : Commisariat of War, XV Brigade, 1938.

https://sidbrint.ub.edu/es/node/12516