APA (7th ed.) Citation

De Voto, B. A. (1942). Mark Twain at work. Harvard Univ. Press.

Chicago Style (17th ed.) Citation

De Voto, Bernard Augustine. Mark Twain at Work. Cambridge, Mass: Harvard Univ. Press, 1942.

MLA (9th ed.) Citation

De Voto, Bernard Augustine. Mark Twain at Work. Harvard Univ. Press, 1942.