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The Gay Science: With a Prelude in Rhymes and an Appendix of Songs by Friedrich Nietzsche; translated, with commentary, by Walter Kaufmann (Vintage Books, March 1974, )

Pérez, Rolando. Towards a Genealogy of the Gay Science: From Toulouse and Barcelona to Nietzsche and Beyond. eHumanista/IVITRA. Volume 5, 2014.