MLA

of Manuscripts, Yale University. Department, and Archives. Book VIII Print 37: Session of the 1st Congress of the Confederación De Trabajadores Cubanos. 1959. https://collections.library.yale.edu/catalog/10018649.

APA, 6th edition

of Manuscripts, Y. U. D., & A. (1959). Book VIII Print 37: Session of the 1st Congress of the Confederación de Trabajadores Cubanos. https://collections.library.yale.edu/catalog/10018649.