APA (7th ed.) Citation

Gilchrist, A. B., Whitman, W., & Harned, T. B. (2011). The Letters of Anne Gilchrist and Walt Whitman. Project Gutenberg.

Chicago Style (17th ed.) Citation

Gilchrist, Anne Burrows, Walt Whitman, and Thomas Biggs Harned. The Letters of Anne Gilchrist and Walt Whitman. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Gilchrist, Anne Burrows, et al. The Letters of Anne Gilchrist and Walt Whitman. Project Gutenberg, 2011.

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