APA (7th ed.) Citation

Tarkington, B., & Wilson, H. L. (2004). The Gibson Upright. Project Gutenberg.

Chicago Style (17th ed.) Citation

Tarkington, Booth, and Harry Leon Wilson. The Gibson Upright. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Tarkington, Booth, and Harry Leon Wilson. The Gibson Upright. Project Gutenberg, 2004.

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