APA (7th ed.) Citation

Black, J., & Penny, N. (1987). Letters from Reynolds to Lord Grantham.

Chicago Style (17th ed.) Citation

Black, Jeremy, and Nicholas Penny. Letters from Reynolds to Lord Grantham. 1987.

MLA (9th ed.) Citation

Black, Jeremy, and Nicholas Penny. Letters from Reynolds to Lord Grantham. 1987.

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