APA (7th ed.) Citation

Gillis, W. R. (1930). Gold rush days with Mark Twain. A. & C. Boni.

Chicago Style (17th ed.) Citation

Gillis, William R. Gold Rush Days with Mark Twain. New York: A. & C. Boni, 1930.

MLA (9th ed.) Citation

Gillis, William R. Gold Rush Days with Mark Twain. A. & C. Boni, 1930.