APA (7th ed.) Citation
Schopenhauer, A., Muñoz Fernánde, A., Muñoz Fernández, A., & Volpi, F. El arte de envejecer.
Chicago Style (17th ed.) Citation
Schopenhauer, Arthur, Adela Muñoz Fernánde, Adela Muñoz Fernández, and Franco Volpi. El Arte De Envejecer.
MLA (9th ed.) Citation
Schopenhauer, Arthur, et al. El Arte De Envejecer.
Warning: These citations may not always be 100% accurate.