Cita APA (7a ed.)

Welch, F. G., Twain, M., & Beard, F. (1872). That convention, or, Five days a politician. F.G. Welch.

Cita Chicago Style (17a ed.)

Welch, F. G., Mark Twain, y Frank Beard. That Convention, or, Five Days a Politician. New York: F.G. Welch, 1872.

Cita MLA (8a ed.)

Welch, F. G., et al. That Convention, or, Five Days a Politician. F.G. Welch, 1872.