"Vallejo: allá ellos, allá ellos, allá ellos" [Editorial Zalvac, Lima], 1978

"Vallejo: allá ellos, allá ellos, allá ellos" [Editorial Zalvac, Lima], 1978, Box: 2, Folder: 9. César Vallejo Papers, 2023-48. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/394925 Accessed September 25, 2026.