APA Citation

Twain, M., Smith, H. N., Gibson, W. M., & Howells, W. D. (1960). Mark Twain-Howells letters: The correspondence of Samuel L. Clemens and William D. Howells, 1872-1910. Cambridge, [Mass.]: Belknap Press of Harvard University Press.

MLA Citation

Twain, Mark, Henry Nash Smith, William Merriam Gibson, and William Dean Howells. Mark Twain-Howells Letters: The Correspondence of Samuel L. Clemens and William D. Howells, 1872-1910. Cambridge, [Mass.]: Belknap Press of Harvard University Press, 1960.

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