APA (7th ed.) Citation

Walpole, H., & Yonge, C. D. (2004). Letters of Horace Walpole - Volume I. Project Gutenberg.

Chicago Style (17th ed.) Citation

Walpole, Horace, and Charles Duke Yonge. Letters of Horace Walpole - Volume I. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Walpole, Horace, and Charles Duke Yonge. Letters of Horace Walpole - Volume I. Project Gutenberg, 2004.

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