APA (7th ed.) Citation

Hills, E. C., & Morley, S. G. (2005). Modern Spanish Lyrics. Project Gutenberg.

Chicago Style (17th ed.) Citation

Hills, E. C., and S. Griswold Morley. Modern Spanish Lyrics. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Hills, E. C., and S. Griswold Morley. Modern Spanish Lyrics. Project Gutenberg, 2005.

Warning: These citations may not always be 100% accurate.