APA (7th ed.) Citation

Seiler, E., & Furness, W. H. (2013). The Voice in Singing. Project Gutenberg.

Chicago Style (17th ed.) Citation

Seiler, Emma, and William Henry Furness. The Voice in Singing. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Seiler, Emma, and William Henry Furness. The Voice in Singing. Project Gutenberg, 2013.

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