Octavio Paz (1985). “The Labyrinth of Solitude: And the Other Mexico ; Return to the Labyrinth of Solitude ; Mexico and the United States ; The Philanthropic Ogre”, p.263, Grove Press
"Signs in Rotation" (1967) in "The Bow and the Lyre : The Poem, The Poetic Revelation, Poetry and History" by Octavio Paz, translated by Ruth L. C. Simms, (p. 249), 1973.
Octavio Paz (1985). “The Labyrinth of Solitude: And the Other Mexico ; Return to the Labyrinth of Solitude ; Mexico and the United States ; The Philanthropic Ogre”, p.54, Grove Press
Octavio Paz (1985). “The Labyrinth of Solitude: And the Other Mexico ; Return to the Labyrinth of Solitude ; Mexico and the United States ; The Philanthropic Ogre”, p.263, Grove Press
Octavio Paz (1985). “The Labyrinth of Solitude: And the Other Mexico ; Return to the Labyrinth of Solitude ; Mexico and the United States ; The Philanthropic Ogre”, p.25, Grove Press